1-First up, preheat your oven to 350 degrees Fahrenheit and lightly grease a 9×9 inch square baking dish. This step sets the stage for a perfectly baked chocolate chip coffee cake. Grab a large bowl and whisk together 2 cups flour, 2 teaspoons baking powder, and 1 teaspoon salt to get those dry ingredients evenly mixed.

2-Next, in another bowl or with a stand mixer, beat 1 stick of room temperature butter and 3/4 cup sugar until it’s nice and creamy. This creates the base for that tender crumb we’re aiming for in this moist coffee cake. Add the 2 eggs one at a time, mixing after each to blend everything smoothly, which helps with the fluffy coffee cake texture.

3-Now, in a measuring cup, whisk together 1 cup milk and 1/4 cup sour cream until combined, then pour this into your butter mixture and stir it all in. The sour cream is what keeps this chocolate chip coffee cake recipe with moist texture so irresistible. With your mixer on low, add the dry ingredients to the wet ones gradually, in thirds, to avoid lumps and keep the batter light.

4-Once that’s done, gently fold in 1 cup chocolate chips to spread them evenly through the batter, then pour it into your prepared pan. For the topping, mix 3 tablespoons softened butter, 1/2 tablespoon cinnamon, 1/2 cup flour, and 1/2 cup brown sugar in a medium bowl. Use two forks to cut the butter into the mixture until it’s crumbly, or pulse it in a food processor for coarse crumbs. Sprinkle this over the batter along with another 1/2 cup chocolate chips.

5-Pop it in the oven and bake for 35 to 40 minutes, or until a toothpick inserted in the center comes out clean that’s your sign for a perfectly done how to make fluffy chocolate chip coffee cake. Let it cool in the pan for a bit before serving.