Desserts Cakes Cake Mix Cake Recipes Dump Cake Blackberry Dump Cake 4.6 (11) 11 Reviews 3 Photos This blackberry dump cake is a real crowd-pleaser. Serve with ice cream or whipped topping. Submitted by JA Taylor Updated on June 27, 2023 Save Rate Print Share Close Add Photo 3 3 Prep Time: 10 mins Cook Time: 45 mins Total Time: 55 mins Servings: 12 Yield: 1 (9x13-inch) cake Jump to Nutrition Facts Cook Mode (Keep screen awake) Ingredients 1x 2x 4x Oops! Something went wrong. Our team is working on it. Original recipe (1X) yields 12 servings 4 ½ cups fresh blackberries 1 ½ cups white sugar 1 cup unsalted butter, thinly sliced 1 (15.25 ounce) package French vanilla cake mix Directions Preheat the oven to 350 degrees F (175 degrees C). Mix blackberries and sugar together in a bowl. Transfer to a 9x13-inch glass baking pan and spread evenly over the bottom. Sprinkle cake mix evenly over the berries. Place butter slices evenly over the cake mix; most of the cake mix should be covered with butter slices. Do not mix or stir. Bake in the preheated oven until topping is golden brown, about 45 minutes. Serve warm. Recipe Tip You can use 4 to 5 cups fresh blackberries. I Made It Print Nutrition Facts (per serving) 398 Calories 18g Fat 60g Carbs 2g Protein Show Full Nutrition Label Hide Full Nutrition Label Nutrition Facts Servings Per Recipe 12 Calories 398 % Daily Value * Total Fat 18g 23% Saturated Fat 11g 55% Cholesterol 41mg 14% Sodium 237mg 10% Total Carbohydrate 60g 22% Dietary Fiber 3g 10% Protein 2g 4% Potassium 109mg 2% * 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.