Recipes Stuffed Bell Pepper Stuffed Red Bell Peppers … sauté ground beef, spinach, basil, shallot… then add grated Parmesan cheese, shredded mozzarella cheese, Panko … sprinkle a little sea salt and ground black pepper. Mix well and allow to cool before stuffing bell peppers. Bake covered for 30 minutes, another 30 minutes uncovered. Oven at 375 degrees. Bake until bell pepper is tender. Stuffed Mushrooms Stuffed Mushrooms Tasty Bites. Stuffed Baby Portobello mushrooms. Remove stems. For stuffing: Dice a shallot, fresh basil, fresh Italian parsley. Add grated Parmesan cheese, a sprinkle of sea salt and ground black pepper. Mix well. Stuff each mushroom and drizzle lightly with olive oil. Bake on a sheet pan at 400 degrees until mushrooms are cooked. Approximately 40 minutes.