Bake up a storm with our delectable Bisquick Coffee Cake Recipe in a 9x13 Inch Pan! Perfect for every occasion, this delightful treat combines the convenience of Bisquick with the timeless flavors of a classic coffee cake.
Preheat the oven to 375 degrees. Grease a 9x13 inch baking dish with butter and set that aside.
In a large bowl, add the Bisquick, eggs, sugar, sour cream, milk, and vanilla extract. Mix well until a batter forms.
Pour the batter into the prepared baking dish.
In a medium bowl, mix together the streusel ingredients. Mix the ingredients until large chunks form and all the ingredients are mixed together.
Sprinkle the streusel topping over the batter in the pan. Place the pan in the preheated oven for 35-40 minutes or until golden brown and a toothpick is inserted and comes out clean.
When the coffee cake is done baking, take it out of the oven and sprinkle with powdered sugar. Serve immediately.