- 3 cups diced fresh rhubarb
- 2 cups diced fresh strawberries
- 1/2 cup white sugar, divided
- 1 1/2 cups all-purpose flour
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1 pinch salt
- 2/3 cup white sugar
- 2/3 cup butter, at room temperature
- 1 large egg
- 1/2 teaspoon almond extract
- 1 cup sour cream
- Preheat oven to 350 degrees F (175 degrees C). Grease a 9×13-inch baking dish.
- Mix rhubarb, strawberries, and 1/4 cup sugar in a bowl; spread fruit mixture into prepared baking dish and sprinkle remaining 1/4 cup sugar on top.
- Sift flour, baking powder, baking soda, and salt together in a bowl. Beat 2/3 cup sugar and butter with an electric mixer set on medium speed in a large bowl until fluffy, 4 to 5 minutes. Beat egg and almond extract into butter mixture until incorporated, about 3 minutes more. Pour in the flour mixture alternately with the sour cream, mixing until just incorporated. Batter will be thick.
- Spoon batter evenly over rhubarb mixture.
- Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 45 minutes.