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bowl of cobbler with a hand holding a fork about to take a bite of the cobbler

Blackberry Cake Mix Cobbler

This easy blackberry cobbler comes together with just a few minutes of active time and it's made with fresh or frozen berries. It's a delicious dessert for summer or any time of year!

Course Dessert
Cuisine American
Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes
Servings 15
Author Kelsie

Ingredients

Instructions

  1. Preheat the oven to 350 degrees. Lightly spray a 13- by 9-inch baking dish with cooking spray.
  2. Arrange the blackberries in an even layer in the bottom of the baking dish. Sprinkle the powdered jello over that, then top with the sugar.
  3. Sprinkle the cake mix powder over all of that, then top with the melted butter and the cold water. (It will look like a lot of liquid but it’s fine!)
  4. Bake for 45 minutes to an hour, until the top is lightly browned and the berry juices are bubbling.

Recipe Notes

  • *I used Betty Crocker Super Moist yellow cake mix but you can use whatever brand you prefer as long as it’s roughly 15.25 ounces. White cake mix is also fine to use.
  • Other flavors of jello are also fine to use, I just think raspberry blends best with blackberries but you can use what you have on hand.
  • You can serve your cobbler warm but it’s MUCH easier to serve if you let it cool for at least a couple of hours so it can set up a bit. It tends to be soupy when it’s warm. I usually make it the night before and serve it cold the next day.
  • Uneaten cobbler can be stored in the fridge, covered, for 4 or 5 days or frozen (in an airtight container) for up to 2 months.
  • You’ll need about 15 to 16 ounces of blackberries to get 4 cups.
  • If you use frozen berries DO NOT defrost them first. Just layer the ingredients over them while they’re still frozen.
  • Depending on how sweet your berries are, you can add a little less sugar; if they’re really sweet I cut the sugar to 1/4 cup. If they’re sour you can add a little more sugar.
  • Be sure to use salted butter; it makes a big difference. If all you have is unsalted, you can mix a 1/2-teaspoon of salt into the butter after you melt it.
  • Sometimes when you make a cake mix cobbler like this you end up with a few pockets of dry cake mix on top. That’s normal but if you want a perfectly smooth topping you can stir the cake mix, water, and melted butter together in a bowl until smooth before pouring it over the berries.