Heat waffle maker to medium-high heat.
Separate dough into 8 biscuits; split each into 2 rounds.
Place 1 tablespoon cheese, 1 slice bacon and 1 teaspoon avocado on 1 round of each biscuit. Top each with remaining biscuit round; press edges lightly to seal.
Spray waffle maker with cooking spray. Place each filled biscuit in hot waffle maker (you can make 1 or 2 at a time depending on size of waffle maker). Close waffle maker; press down to seal edge of sandwich inside. Cook about 1 minute or until sandwich is golden brown. Cool slightly before serving.