Chocolate Eclair Cake
["20 whole graham crackers", "2 c. cold milk", "1 pkg. Jell-O vanilla instant pudding", "1 3/4 c. Cool Whip", "1 c. ready to spread chocolate fudge frosting", "2 (21 oz.) cans cherry pie filling (optional)"]
["Line 9 x 13-inch pan with graham crackers, breaking cracker where necessary to fit."]
["graham crackers", "cold milk", "ready", "cherry pie filling"]