Spinach Cheese Bake

SPINACH CHEESE BAKE

1 tbsp. butter
1 very sm. onion, chopped
3 eggs
1/2 c. milk
1/4 c. flour
1/2 tsp. baking powder
1/2 tsp. salt
Pepper
1 (10 oz.) pkg. frozen spinach, thawed and drained
2 c. Monterey Jack cheese, shredded

Melt butter in 8-inch square or 9-inch round baking dish in microwave. Tilt to coat sides. Add chopped onions, cover, and cook 2-3 minutes until translucent. Set aside.