1 large red bell pepper
1 large yellow bell pepper
1 medium jalapeno chile pepper
1 medium red onion
1/4 cup unsalted butter
1 teaspoon fennel seed
1/2 teaspoon kosher salt
1/4 teaspoon freshly ground black pepper
2 tablespoons spicy brown mustard
5 fresh bratwurst
5 large hot dog buns
Remove and discard the stems and seeds from the bell peppers and jalapeno pepper. Cut the bell peppers lengthwise into 1/3-inch strips. Finely chop the jalapeno pepper. Cut the onion in half through the stem and root ends. Cut each half crosswise into 1/2-inch slices. Melt the butter in pan. Add the peppers, onion, fennel seed, salt, and pepper. Mix well with tongs. Cook the vegetables in the pan over direct medium heat, with the lid closed as much as possible, until they are tender and golden brown in spots, 10 to 15 minutes, stirring occasionally. When the vegetables are tender, add and mustard. Mix well with tongs.
Prepare Brats per the directions on the packaging
Put the Brats in the buns, cover with the pepper mixture, top with condiments of choice (I prefer ketchup) and enjoy.