HEAT oven to 375ºF.
SEPARATE biscuits; cut each crosswise in half. Press each into 4-inch round. Place 1 dough round in each of 10 muffin cups sprayed with cooking spray.
COMBINE egg product, peppers, onions and 1/4 cup cheese; spoon into cups.
BAKE 15 min. or until centers are set. Sprinkle with remaining cheese; bake 5 min. or until melted.