Email to Debbie Wharton Howell Key Lime Cake Source of Recipe cooks.com List of Ingredients 1 box Duncan Hines lemon cake mix 1 pkg. lemon instant pudding mix 1 c. water 1 c. oil 4 lg. eggs 1 tbsp. key lime juice Instructions Mix all ingredients together and bake at 325 degrees for 45 minutes. Final Comments ICING: 2 c. powdered sugar 1/3 c. lime juice Mix well and pour over cake.