To keep the peppers from becoming soggy, use a thick salsa or crushed tomatoes and avoid adding too much liquid to the filling. Choose peppers of similar size so they cook evenly and stand upright in the baking dish. For spicier peppers, increase the cayenne or add chopped jalapeño to the filling, or keep the base mild and let everyone customize their heat level with hot sauce at the table. These stuffed peppers reheat well for meal prep and can be stored in an airtight container in the refrigerator for up to 4 days or frozen individually for longer storage.