Melt in 9 x 13 inch pan 1/4 c. butter

Beat:

1 1/2 dozen eggs
1 c. sour cream
1 c. milk
2 tsp. salt
1/4 c. chopped onion

Pour into buttered pan. Put shredded Cheddar cheese on top. Bake at 350 degrees for 35 minutes. Maybe a little more, check center.