Let them eat slow-cooker cake! This double chocolate cake is moist and delicious—and it starts with a boxed mix, so it's easy too!
1 pkg. (2-layer size) chocolate cake mix
1 pkg. (3.9 oz.) JELL-O Chocolate Flavor Instant Pudding
1 cup BREAKSTONE'S or KNUDSEN Sour Cream
1 cup water
2/3 cup oil
1-1/2 pkg. (4 oz. each) BAKER'S Semi-Sweet Chocolate (6 oz.), chopped
1 cup thawed COOL WHIP Whipped Topping