1: Butterfly open sausages.
2: Sear the cut open side on a hot pan or griddle.
3: Remove from pan when the cut open side has browned.
4: Add diced bell peppers, onion, and sliced mushrooms to the pan.
5: Cook in the sausage grease (add oil if necessary).
6: When veggies are soft, add salt, pepper, and balsamic vinegar to caramelize.
7: Add veggies to the top of the brats.
8: Top with cheese and hot giardenera.
9: Bake at 375°F for 5-10 minutes.
10: Top with mustard or red sauce.