How to make sausage, peppers and onions in the oven in the simplest way possible - using a sheet pan. This is an easy path to a delicious bratwurst sandwich or an Italian sausage sub. Drive the flavor profile by matching the type of sausage with the color of the peppers and the seasonings used.
Preheat oven to 425 F. Line a two-thirds baking sheet with parchment paper and set aside. Brush the sausages with olive oil.
Clean and slice the peppers into thicker strips and the onions into thicker half-moons**. Place inside a large bowl, add the remaining olive oil and seasonings. Toss to coat well.
Spread the coated peppers and onions over the lined baking sheet. Nestle the sausages on top.
Bake for 15 minutes. Remove from the oven, flip the sausages and stir around the veggies so they can bake evenly on all sides. Return to the oven for 10 to 15 more minutes, or until the sausage looks nicely browned and the veggies have softened and developed a caramelized char around some of the edges.
Notes
*Bratwurst or Italian sausage. The recipe as written is intended for bratwurst sandwiches. Use Italian sausage links, red and yellow bell peppers an red onions for an Italian version. If you like fennel and your sausage does not include it add some to taste when tossing the peppers and onion. Also consider red pepper flakes and Italian seasoning. **Cutting into thicker (wider) strip ensures that the peppers and onions will cook at the same rate as the sausage and even as water evaporates they will be a good size when finished with some structural integrity remaining even as they have softened and charred/caramelized on the outside.You can place brat buns or sub rolls in the oven towards the very end of the cooking time to warm them up or put them in after you have turned off the oven and taken out the sheet pan (just for a couple of minutes).