Preheat oven to 350 degrees F In a large bowl combine mushrooms, cheese, pizza sauce and garlic powder In a separate bowl beat eggs Blend in oil Add flour and baking powder Beat until smooth Stir cheese mixture into flour mixture until well blended Spoon mixture into greased muffin liners (the muffins will stick to the liners otherwise and prove difficult to remove) Bake for 20-25 minutes until lightly browned Can be served either warm or cold Store in refrigerator