Add minced garlic to butter an a microwave safe bowl. microwave for about 45 seconds to melt butter and set aside.
Prepare your mushrooms and using a pastry brush cover all over bottom and top with garlic butter. Place mushrooms gil side up on a cookie sheet.
Fill mushrooms with tomatoes and brocconcini. top with about a tablespoon or so of sauce, fresh basil and salt and crushed red pepper.
Place on oven rack about 10 inches away from broiler and broil on hogh for about 20 minutes until cheese is melty and tomatoes bubbly. Enjoy!