*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
**Nutrient information is not available for all ingredients. Amount is based on available nutrient data.
(-)Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.
Preheat oven to 375 degrees F (190 degrees C). Grease a baking sheet.
Mix flour, oats, butter, brown sugar, and graham cracker crumbs together in a bowl; spread mixture onto the prepared baking sheet.
Bake in the preheated oven until lightly browned, about 15 minutes. Sprinkle half the oat mixture into a 9x13-baking dish; gently pat into dish. Drizzle half the chocolate sauce over oat layer.
Arrange vanilla ice cream slices over chocolate layer; sprinkle the remaining oat mixture over ice cream layer. Drizzle the remaining ice cream sauce over cake. Cover dish with aluminum foil and freeze until set, at least 5 hours.