Heat oven to 400. Fry bacon. Drain fat, reserving 1 Tbls.. Crumble bacon. Sift flour and powder. Cut in butter. Stir in egg and cream.
Add bacon, cheese and onions. Grease 12 muffing tins with reserved fat. Drop batter into each cup filling 2/3 full. Bake 15-20 minutes or until gold. Serve hot.