Can I use a different type of sausage?
Yes. Italian sausage, kielbasa, or andouille all work well. Adjust cooking time if using links versus patties.
Do I need to peel the mushrooms?
No. Simply wipe them clean with a damp paper towel and slice. Peeling is optional and not necessary.
Can this be made ahead?
Yes. Prepare the sausage and vegetables, refrigerate up to 24 hours, then bake. Add 5 extra minutes if baking from cold.
What temperature should the bratwurst reach?
Internal temperature should reach 160°F (71°C) for food safety.
Can I substitute the mozzarella?
Yes. Cheddar, Gruyère, or a blend work well. Avoid low-moisture cheeses that don't melt smoothly.