Fill the two unused cups with water to keep bottoms from burning.
Beat first 3 ingredients at medium speed with an electric mixer until combined. Stir in shredded Swiss cheese and chopped green onion.
Separate biscuits, and pat into 5-inch circles. Press circles into greased 3 1/2-inch muffin cups, leaving a 1/4-inch border at top of each cup. Sprinkle evenly with half of bacon; top with 2 tablespoons cream cheese mixture.
Bake at 375° for 22 minutes or until set. Remove from oven, and sprinkle with remaining bacon, gently pressing into filling.