1 box brown sugar
1/2 c. sugar
2 sticks butter
2 c. flour
4 eggs
1 tsp. vanilla

Melt butter in 13 x 9-inch pan. Mix brown sugar, sugar, flour and eggs together. Pour melted butter over mixture; add vanilla and mix well. Pour back into 13 x 9-inch pan and bake 1 hour at 300°F.