Once you make this incredibly moist coffee cake recipe the first time, it will be your go-to for life! With an irresistible crumb streusel topping and simple yet delicious glaze, this easy coffee cake recipe serves a crowd. The only problem is, once you taste it you won't want to share!
In a large bowl combine the flour, brown sugar, cinnamon and salt. Stir to combine. Pour in the melted butter and use a spatula to moisten and combine. You can also use your hands to combine the crumb. The mixture will be sandy with some larger clumps. Set aside.
3 cups (360g) all-purpose flour, 2 cups (426g) brown sugar, 2 Tbsp cinnamon, 1 ½ tsp salt, 1 cup (226 grams) unsalted butter
Cake
Preheat the oven to 350ºF. Spray a 9x13 inch baking pan with nonstick cooking spray or line the pan with parchment paper.
In a small mixing bowl combine the flour, baking powder, and salt. Stir to combine.
3 cups (360g) all-purpose flour, 2 ½ tsp baking powder, 1 tsp salt
In a large mixing bowl beat the softened butter and granulated sugar with an electric mixer on medium-high speed until light and fluffy, about 1-2 minutes.
1 cup (226g) unsalted butter, 2 cups (396g) granulated sugar
Beat in the eggs and vanilla extract.
4 large eggs, 2 tsp vanilla extract
Add in half of the flour mixture, beat on low speed until just combined.
Add in the sour cream and milk, beating for 30 seconds, then add in the remaining flour mixture. Beat on low until combined. Use a spatula to scrape down the bowl.
1 cup (227g) sour cream, ½ cup (118ml) milk
Pour half of the cake batter into the prepared pan, spread into an even layer.
Measure out 3 cups of the crumb topping and sprinkle that evenly over the cake batter. There should be about 6.5 cups of crumb total, so save 3.5 cups for the topping.
If you like cinnamon, sprinkle more cinnamon over the first layer of crumb topping. I think this helps the filling to taste more cinnamony!
Add the remaining batter to the pan, using a spatula to spread it into an even layer. This might be a little tricky as the crumb layer likes to move around.
Sprinkle the remaining crumb topping over the cake.
Bake for 45 minutes. Then place a large piece of aluminum foil over the cake and bake for 20-25 additional minutes or until a toothpick inserted in the center comes out clean. The foil will allow the inside of the cake to bake without over-browning the top.
Allow the cake to cool. Drizzle the glaze over the cake. Slice and serve.
Cover leftovers and store at room temperature for up to 3 days or in the refrigerator for up to 1 week.
Glaze
In a small mixing bowl combine the powdered sugar, vanilla extract, and heavy cream. Whisk until smooth and pourable.
1 cup (113g) powdered sugar, ½ tsp vanilla extract, 2 Tbsp heavy cream or milk