Dump frozen blueberries straight into a casserole dish, add just 3 simple ingredients, and watch what happens when this turns into an unbelievably good dessert your family won’t stop eating.
This 4-Ingredient Oven-Baked Blueberry Dessert shows how simple layering creates a self-saucing bake: frozen berries release juice as they cook, which moistens the cake mix from below, while melted butter helps form a golden, slightly crisp topping. The result is a cobbler-style dessert with minimal prep and no mixing required.
Ingredients
- 4 cups frozen blueberries (do not thaw)
- 1/2 cup granulated sugar
- 1 box (15.25 oz) yellow cake mix (dry)
- 1/2 cup unsalted butter, melted
Instructions
1. Prepare the base
Preheat oven to 350°F (175°C). Grease a 2-quart casserole dish. Spread frozen blueberries evenly in the dish.
2. Add sugar
Sprinkle sugar evenly over the berries. Do not stir.
3. Add topping
Evenly pour the dry cake mix over the berries. Drizzle melted butter across the top as evenly as possible.
4. Bake
Bake for 40–50 minutes, until the top is golden and blueberry juices are bubbling through.
5. Rest before serving
Let it sit for 10–15 minutes so the filling can thicken and set.
Result: a warm, jammy blueberry base with a soft cake-like top and lightly crisp edges.
