This Easy Loaf Pan Coffee Cake With Crumb Topping is a super moist traditional coffee cake with a delicious cinnamon swirl layer and a generous crumb topping all made in a loaf pan.
Preheat the oven to 350°F. Butter and flour a 9-inch aluminum loaf pan.
In a large bowl, cream the butter and sugar. Add the eggs and mix to combine. Add the sour cream and vanilla and combine.
Add the flour, baking soda, baking powder, and salt and combine.
Add half of the coffee cake batter one spoonful at a time to cover the bottom of the loaf pan.
In a small bowl, combine 2 tablespoons of granulated sugar and 1 teaspoon cinnamon. Sprinkle the cinnamon sugar over the coffee cake batter. Add the remaining half of the batter to create an even layer covering the top of the loaf cake. Do not add the crumb topping yet. This will be added after it has baked for 30 minutes.
Bake at 350°F for 30 minutes.
While the coffee cake is in the oven, make the Crumb Topping. In a medium bowl, combine the flour, brown sugar, cinnamon, salt, and softened butter. Use your fingers to scrunch the ingredients together to form crumbs of various sizes (some pea-sized, some much larger).
At the 30-minute mark, remove the coffee cake from the oven. Top with the crumb topping. Place the loaf pan in the oven and bake for an additional 15-20 minutes for 45-50 minutes total.
The Loaf Pan Coffee Cake is done when the crumb topping is a deep golden brown color and a toothpick inserted in the middle comes out clean.
As the weight of the crumb topping presses on the cake while it cools the middle will sink slightly. This does not necessarily mean that the cake is undercooked in the center.
Notes
Cinnamon Swirl Layers: My original family recipe calls for a cinnamon swirl layer in the middle and a sprinkling of cinnamon sugar on top. It’s a more understated coffee cake, sweet and simple. To do this, double the quantity of the cinnamon and sugar. Sprinkle half in the middle and half on top. Watch the baking time, and take it out early if needed.
Other Toppings: A coffee cake is an excellent candidate for adding nuts and other toppings. Feel free to top the cake with chopped walnuts or pecans, or mix a handful of oats into the crumb topping.
Pan Types: This cake can also be made in mini loaf pans by decreasing the bake time, as well as in an 8-inch square baker.
Thick Batter: This coffee cake batter is thick and needs to be spooned into the prepared loaf pan. Use the back of a spoon to gently spread the batter to the corners of the pan.
Crumb Topping Weight: The weight of the crumb topping is quite heavy (by design - I like super thick crumb topping and a super moist cake). The center of the loaf will fall slightly after removing it from the oven. This is as intended and will result in a moist cake with a thick topping.
Cooling: If you'd like the cake to cool faster, you can place it on a wire rack to enable air circulation underneath the loaf pan as well.