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What is Zwiebelkuchen?
Zwiebelkuchen is a savory German onion pie. It is prepared with a crust filled with a mixture of eggs, cream, cooked onions and frequently bacon. Essentially a hybrid between a deep dish pizza and a quiche. Flavor wise this German onion tart is remarkably similar to Flammkuchen.
In direct translation from German the meaning of the specialty is onion cake (Zwiebel=onion and Kuchen=cake).
The traditional shape is round but modern versions include sheet style rectangular onion pies.
Background
In Germany onion pie is enjoyed year round, but it reaches the peak of its popularity during the fall harvest each year. It is the main gastronomic focus on the menu of the wine festivals of Germany's wine regions (Baden, Rhine, Palatinate, Franconia, etc) as well as the Weimer onion market. It is also a popular offering during Oktoberfest and on beer garden menus in Bavaria.
Zwiebelkuchen has many regional variations. They involve both the ingredients used and the method of preparation.
For example in Southern Germany the crust is typically thinner than in other areas because the onions and bacon are added pre-cooked to the filling. In Saxony, the opposite is true.
In some areas people use a more pie like crust made with cold butter, in others a yeasty dough.
Ingredients for Zwiebelkuchen
Crust. Here we made a traditional Schwäbischer Zwiebelkuchen (the style popular in Southwestern Bavaria) so the crust is a yeast dough with milk (yeast, milk, sugar, salt, flour, butter). Alternatively, you can use store-bought pizza dough or pie crust.
Onions. For the star ingredient of this dish you can choose yellow onions or an even sweeter variety such as vidalia. Red onions work too.
Eggs. Classic binder used in the filling.
Cream. Some regional versions especially those from areas near the French boarder use creme fraiche while in other areas heavy cream is added. You can substitute one for the other in the same quantity in this recipe.
Butter. Added both to the crust dough and scattered on top of the assembled onion pie before baking. Skip the latter if you do not wish your Zwiebelkuchen to be too rich.
Bacon. High-quality, thick cut, lightly smoked bacon is the traditional choice.
Flour. Besides being used in the crust a bit of flour is added to the cooked down onions to absorb some of their moisture and to later on add as a thickening agent in the custard.
Seasonings. Salt is used liberally to flavor the filling. Regarding spices, caraway seed is a traditional option, famous for its digestive benefits. If you like nutmeg add a pinch or two to the custard. Black pepper is welcome.
Garnish. Frequently chopped chives or German thyme are used as a garnish, a dollop of sour cream is complementary as well.
How to Make German Onion Pie
Step 1. Make the dough for the crust.
- To make the crust activate yeast with a bit of milk and sugar, then add flour, salt, more milk and butter and using the dough hook of a stand up mixer knead into a dough.
- Let rest covered at a warm temperature until the dough rises enough to double in size before you roll it out.
Skip entirely if using store bought pizza-dough or pie crust.
Step 2. Prep the Bacon and Onions for the Filling
- Cut the bacon and onions as shown, set the onions aside and over medium heat cook the bacon until most of the fat is rendered.
- Remove to a paper towel lined plate and let cool down. Remove excess rendered fat from the pan, leave just enough to barely coat the bottom.
- Next, melt butter in the same pan and cook down the onions (it helps if you partially cover them to retain more of the moisture).
- After a while add flour, mix, remove the onions from the heat and allow them to cool down.
Step 3. Mix the filling, assemble and bake.
Firts, in a bowl whisk eggs and cream, add salt, cooked down onions and most of the bacon bits. Mix together.
Then, line your baking dish with parchment paper, arrange the crust and pour the onion mixture.
Finally, sprinkle with caraway seed, a few bacon bits and add flakes of butter. Bake in the oven until golden brown.
TIPS: (1)You don't have to use parchment paper to line the baking dish of your choice, but using it certainly makes things much easier and is common practice in Germany. (2) The height of the crust will depend on the baking dish. The smaller it is the higher up the crust will reach along the sides.
Serving & Pairing German Onion Pie
Zwiebelkuchen is best served warm. A slice can be presented very casually as finger food or served plated, sometimes accompanied by sour cream and a fresh herb garnish.
During the autumn wine festivals the most popular beverage pairing is a white new wine known as Federweisser. Riesling is also a favored option. Various German lagers such as Pils, Helles, Marzen, and Dunkel are another well-loved alternative.
Storage and Reheating
This onion pie is best when just baked and during the few hours after it has cooled down.
If you have leftovers store them in an airtight container in the refrigerator. To reheat either use the microwave oven or wrap in foil and reheat in an standar oven at 300 F for about 5 minutes.
Other Recipes You Might Like
Flammkuchen (Alsatian Onion Tart) | Baked Onions with Dark Ale and Balsamic
Beer Brats & Onions | Beer Onion Gravy
We adapted this recipe from Chefkoch.de
Recipe
German Onion Pie (Zwiebelkuchen)
Ingredients
Yeast Dough for Crust*
- 1 packet dry active yeast
- ⅔ cup milk lukewarm
- 1 teaspoon sugar
- 2 cups flour
- 1 teaspoon salt*** or to taste
- ¼ cup butter at room temperature
For Filling
- 4 oz bacon diced** (preferably smoked, leaner, thick cut)
- 1 lb onions about 2-3 medium sized
- 2 tablespoon butter for cooking the onions + 1 tablespoon butter (for optional topping before pie is baked)
- 1 tablespoon flour
- 2 eggs
- ½ cup heavy cream
- ½ teaspoon salt or to taste***
- pinch of nutmeg optional
- caraway seed to taste
Instructions
YEAST DOUGH
- In the bowl of a stand up mixer combine the yeast with the sugar and about half of the milk. Stir and let activate in a warm place. Anywhere from 5 to 20 mins, as necessary.
- Attach the dough hook to mixer, add flour, salt and the rest of the milk to the activated yeast. Knead on low for a minute, then stop and add the butter. Knead again until a soft dough ball forms. Cover with plastic wrap and let rise in a warm spot, until doubled in size.
- On a clean, lightly floured surface roll the dough into a round or rectangular shape sized to fit your baking dish. (Use a 9-10 inches diameter round dish or 9x9 square or about 9x10 rectangular dish).
Filling
- In a pan over medium heat cook the diced bacon until it renders most of its fat. Remove to paper towel lined plate and let it cool down. Discard excess rendered fat from the pan, leave a coating or so.
- Peel and thinly slice the onions. In the same pan melt 2 tablespoon butter, add the onions and cook until soft. Partially cover the pan with a lid to help them sweat. Once soft, add 1 tablespoon flour, mix and cook for 1 more minute. Remove from heat and let cool down.
- Assemble the filling only after you have rolled out the dough and are ready to place it inside the baking dish.
- Preheat oven to 390 - 400 F.
- In a bowl whisk eggs and cream, season with salt (liberally). Add nutmeg if using. Fold in the cooked onions and most of the bacon (reserve about 1 tbsp).
- Line your baking dish with parchment paper, place the rolled dough and adjust it around the edges (how high the sides will go depends on the size of the dish) and add the filling. Sprinkle with caraway seeds, the reserved bacon and add a few flakes of butter.
- Bake for 35 to 45 minutes, until the filling is nicely set and fully cooked and the crust golden brown. Allow the onion pie to cool down a tad bit, slice and serve warm.
Helen Kraus
Can you make this ahead of time and reheat?
Milena Perrine
Helen, yes of course, it just won't taste nearly as good as when baked fresh. If you make it with store-bought pie crust it warms up slightly better.
sandra
I made this receipe last nite and would not make it again. I used 1 tsp salt and it was very salty. It was a waste of ingredients and time. Just cook eggs and bacon and it would have been better
Milena Perrine
Sandra, yes, the degree of saltiness can vary depending on the density of the salt used (more dense, more salty, therefore 1 tsp will be a lot). Additionally, if you used salted butter versus unsalted (recipes specifically call for salted if needed, never assume you can substitute) this will compound the matter. Because we cannot know what brand of salt our readers are using we always try to caution them on the fact that salt is a seasoning to be used to taste.
Evelina
I have made this recipe six times over the last year or so. It is very versatile and can be served as an appetizer or a dinner with salad. Once I lined a baking dish with parchmnet paper and poured the filling inside and baked it as a quiche (no crust at all) and it was amazing for brunch.
Debbie
You say you can make this with pre--made pizza dough or pie crust. Which would make this more authentic? As there's quite a difference taste wise. Thanks, it really does sound good!
Milena Perrine
The authenticity element really depends on the area of Germany where the onion pie is made. In some areas they prefer yeasted doughs and in others quick cold butter pastry-like doughs like a pice crust. Go with your preference:)
Connie Hamilton
Im gonna make this tomorrow gang. Cant wait. Cheers
DonnaT
Awesome recipe.! (BTW the carb count isn't 1205, but actually 32 per Recipe Analyzer.)
Milena Perrine
Thank you, Donna! Actually the 1205 value is for the sodium, 34 for the carbs:)
Grace
Hi, I made this yesterday. Unfortunately, it was much too salty. I would reduce the salt in the filling. Dough came out very well, and easy enough to make. Thank you for the recipe!
Milena Perrine
Yes, it is better to use salt to taste knowing the brand of salt you cook with at home. Typically, the sweetness of the heavy cream absorbs much of the added saltiness, but it really depends on the density of the salt you have (denser will have much higher saltiness factor per teaspoon).
LOIS D DIEHL
I am going to make this for a German dinner I am preparing in a few days. It looks absolutely delicious. How far in advance can I prepare this pie? Can it be reheated in the microwave?
Craft Beering
Lois, it can be reheated but it looks and tastes nothing like a freshly baked onion pie. I would suggest that you prepare your recipe componenets to the point of simply having to roll out the dough and mix the filling and place it in the oven. You can make the dough (or use store bought pie crust) and once it has doubled in size carefully wrap it in plastic wrap or place it in gallon sized zip lock and keep refrigerated. You can also cook the bacon and onions a day or two in advance and keep them refrigerated. Then on the day of you'd bring out the dough to allow it to come to room temperature and get soft, bring the cooked onions and bacon to room temperature, roll out the dough, quickly mix the pie filling and bake. It will be so much better than reheated.
Patti
Do you pour off the rendered bacon grease from the skillet before addng the buer and onions to that skillet?
CraftBeering
Patti, typically yes, but if the bacon was meatier and only a little bit of bacon fat was rendered we'd leave it because it is so flavorful once combined with the butter. We view it as a matter of personal judgment:)
Donna
Can you replace the heavy cream with sour cream or yogurt?
CraftBeering
Definitely, either sour cream or thick Greek style yogurt will work in lieu of the heavy cream in the filling.
Loreto and Nicoletta Nardelli
This is such a great pie, guys! It could easily replace pizza night, with a cold beer and a movie kind of night. Love the step by step!
CraftBeering
Thank you! Great idea btw:)
Kerryanne
Wow Milena, my husband has just said 'he' is making this onion pie this weekend. Already salivating!!
Thank you for sharing at Create, Bake, Grow and Gather this week. We always love your recipes. Pinning your recipe to our party board.
Hugs,
Kerryanne
CraftBeering
Hope he does well:) Thank you, Kerryanne!
Matt
I only ate it, my wife made it after I sent her the link to the recipe. It was delicious
Katherine | Love In My Oven
This sounds like something that I would definitely love, as well as my family! We pretty much never say no to onion and bacon in a dish 😉 Yum!
Dawn - Girl Heart Food
This looks SO good! I haven't heard of this type of pie before, so clearly I've been missing out! Sounds amazing and bet it would go over so well on Friday night with a cold bevy 🙂
CraftBeering
Even for breakfast:) Thank you, Dawn!
Jennifer @ Seasons and Suppers
This looks absolutely delicious and I love that it has a yeast dough crust! You can never go wrong with eggs, cream and bacon, in my opinion 🙂
CraftBeering
You speak the truth:) We agree with your opinion - it is a rich pie, but delicious namely for the yeast crust and the filling!
Leanne
As I'm a huge fan of both quiche and deep dish pizza, I am certain I would love this onion pie. And I've had flammkuchen before so it's good to know it has a similar taste! Pinning and hope to make it some time soon!
Kelsie | the itsy-bitsy kitchen
I've never heard of zwiebelkuchen but I totally need to try it, not just because it sounds delicious but also because I really like the name :). Adding this one to my must-try list now!
Krishunee
I was really good, borderline salty. However I used a store bought organic pie crust and turkey bacon, maybe next time I will actually make the dough. It may balance the saIt. It also was alittle wetter that i like on the bottom. Im not sure if my onions were cut to small, I use the processor. I used Vidalia, shallot,, and purple. Additionally, I want to try mushrooms, like baby bella, shittake, or oyster to give a meatier texture. I know that it less traditional but I think it will be good.
Denny Felizzi
I have a feeling i'm gunna be all over this. Real soon!
Sounds great!!!
CraftBeering
Cheers, Denny!