The bright colors and flavors of the mixed berries are a delicious addition to the sweet and buttery coffee cake, while the tender crumb and crunchy sugar crust provide a delightful texture contrast.
Whether enjoyed alongside a morning cup of coffee or as a midday treat, this Berry Coffee Cake is sure to brighten your day and leave you craving another slice.
Slowly add the egg, lemon zest and vanilla and mix on low speed until smooth. Stop the mixer and add the flour, baking powder and salt, then mix on low speed just until almost combined.
Transfer the batter to a buttered 9" x 9" baking dish, using an offset spatula to spread evenly. Sprinkle about 2 tablespoons of coarse sugar over the cake batter just before baking.