Step 1

Preheat oven to 425 degrees F.

Step 2

Place the sliced bell peppers and onions on a large sheet pan. Drizzle with the olive oil and season with salt and pepper. Toss to coat then arrange the vegetable mixture in a single layer. Nestle in the sausages between the vegetables.

Step 3

Using a small sharp knife, score the sausages in a few places on just one side, making sure the cut is very shallow. Transfer the sheet pan to the oven and bake for 20 minutes.

Step 4

Remove the pan from the oven, flip the sausages and give the peppers and onions a quick toss. Bake for another 15 to 20 minutes, or until the sausages are fully cooked and the peppers and onions are tender and slightly charred on the edges.