This deliciously sweet mixed berry coffee cake is so simple and quick to make, and perfect for entertaining. It's sure to be a favorite!
for the fruit filling:
2cupsfrozen mixed berries
for the coffee cake:
4tablespoonsbuttercut into small pieces
for the streusel:
2tablespoonsbuttercut into small pieces
Preheat the oven to 350. Prepare a 9 x 9 baking dish by buttering or spraying with cooking spray.
To make the filling, whisk together the water, sugar, and corn starch in a medium saucepan. Mix in the frozen berries and heat over medium heat until the mixture reaches a simmer. Let simmer 4-6 minutes, or until thickened. Set aside.
To make the cake, in a large bowl or the bowl of a stand mixer, whisk together the flour, sugar, baking powder, and baking soda. Cut in the butter until the mixture resembles coarse crumbs. Whisk together the egg, buttermilk, and vanilla, then add the wet ingredients to the dry ingredients. Mix until just combined. Spread about half of the mixture in the prepared pan. Pour the filling over the batter, then drop remaining batter by spoonfuls over the filling.
To make the crumb topping, mix together the flour and sugar, then cut in the butter until the mixture resembles coarse crumbs. Sprinkle the topping over the batter. Bake 40-45 minutes or until light golden brown and cooked through.