Chocolate Revel Bars
["1 c. butter", "2 c. brown sugar", "2 eggs", "2 tsp. vanilla", "2 1/2 c. flour", "1 tsp. soda", "3 c. quick oats"]
["Mix crumbs and pack 2/3 in a 10 x 15-inch pan."]
["butter", "brown sugar", "eggs", "vanilla", "flour", "soda", "oats"]