7-Up Cake
["1 box Duncan Hines lemon cake mix (not pudding kind)", "1 box instant Jell-O pudding (pineapple)", "4 eggs", "3/4 c. oil", "1 (10 oz.) bottle 7-Up", "1 stick butter", "3 eggs", "1 c. crushed pineapple (small can)", "1 Tbsp. flour", "1 1/2 c. sugar"]
["Cook until thick; add 1 cup chopped nuts and spread on cake."]
["lemon cake mix", "pineapple", "eggs", "oil", "butter", "eggs", "pineapple", "flour", "sugar"]