Strawberry Rhubarb Coffee Cake Recipe

Ingredients

• FILLING:
• 3 cups sliced fresh or frozen rhubarb (1-inch pieces)
• 1 quart fresh strawberries, mashed
• 2 tablespoons lemon juice
• 1 cup sugar
• 1/3 cup cornstarch
• CAKE:
• 3 cups all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 cup butter, cut into pieces
• 1-1/2 cups buttermilk
• 2 large eggs, room temperature
• 1 teaspoon vanilla extract
• TOPPING:
• 1/4 cup butter
• 3/4 cup all-purpose flour
• 3/4 cup sugar