Bacon Monkey Bread

11 bacon slices, cooked, crumbled
1/2 c. butter, melted
1/2 c. grated Parmesan cheese
1 small onion, chopped
3 (10 oz.) cans refrigerated buttermilk biscuits

In medium bowl combine bacon, cheese and onion; set aside. Cut each biscuit into quarters. Dip 1/3 of biscuit pieces into melted butter and place in 12-cup Bundt pan sprayed with cooking spray. Sprinkle with half of bacon mixture. Repeat layers with remaining biscuit pieces and bacon mixture, ending with biscuit pieces. Bake 40 minutes in preheated 350° oven or until golden. Cool in pan 10 minutes; invert onto serving platter and serve immediately.