3 med. onions, sliced separate rings
1/4 c. butter
1 (7.5 oz.) pkg. refrigerator buttermilk biscuits
1 egg
1 (8 oz.) container sour cream
1/4 tsp. salt
1 tsp. poppy seeds

Saute onions in the butter until softened. Separate biscuits and place in a single layer in an ungreased 8 inch layer cake pan, pressing together to cover bottom of pan. Spoon onion mixture over dough. In a small bowl, beat egg, stir in sour cream and salt. Spoon over onion mixture; sprinkle with poppy seeds. Bake in 375 degree oven for 30 minutes or until topping is set. Cut into wedges and serve warm.