Mrs. Berry'S Berry Coffee Cake - cooking recipe

Ingredients

Cake:
2 cups baking mix
1 (10 ounce) package boysenberries
2/3 cup milk
1 egg
2 tablespoons brown sugar
1/2 teaspoon vanilla extract
Streusel Topping:
1/3 cup baking mix
1/3 cup brown sugar
1 pinch ground cinnamon, or to taste
2 tablespoons butter, or to taste

Preparation

Preheat oven to 400 degrees F (200 degrees C). Grease a 9x11-inch baking pan.
Mix 2 cups baking mix, boysenberries, milk, egg, 2 tablespoons brown sugar, and vanilla extract in a bowl until batter is moist, about 30 seconds. Pour batter into baking pan.
Combine 1/3 cup baking mix, 1/3 cup brown sugar, and ground cinnamon in a bowl; cut in 2 tablespoons butter with a fork, until mixture resembles coarse crumbles. Sprinkle crumbles over the batter until covered.
Bake in the preheated oven until a toothpick comes out clean, 20 to 25 minutes.