Glazed Coffee Cake

This coffee cake uses Grape-Nuts cereal in the streusel layer, which is an old trick that adds a satisfying crunch you won’t get from standard crumb toppings. The cereal gets mixed with sugar, instant coffee, and cinnamon to create a streusel that bakes up crunchy and coffee-flavored, layered between and on top of a rich sour cream batter.

The batter itself is a classic sour cream coffee cake: butter, sugar, eggs, flour, and a full cup of sour cream for that tangy, incredibly moist crumb. The sour cream also reacts with the baking soda to give the cake a tender rise without being heavy.

Three layers of batter alternate with two layers of the coffee-cereal streusel, so every slice reveals those crunchy, spiced ribbons running through the middle. A simple coffee glaze drizzled over the cooled cake ties the whole coffee theme together.

Kitchen Tips

• Spread the batter layers evenly, especially over the streusel. Thin spots let the streusel push through and create holes in the cake.
• Use regular Grape-Nuts, not any other cereal. Their dense, crunchy texture holds up during baking where granola or other cereals would get soggy.
• Let the cake cool completely in the pan before glazing. Hot cake absorbs the glaze into the crumb instead of letting it sit on top as a glossy drizzle.
• Make the glaze with cooled brewed coffee, not hot. Hot liquid makes the confectioners’ sugar dissolve too fast and creates a thin, runny glaze.

Variations

• Add ½ cup of chopped pecans to the cereal streusel for an even crunchier layer.
• Use decaf instant coffee and brewed decaf for the glaze if you’re caffeine-sensitive.
• Swap the coffee glaze for a maple glaze (powdered sugar + maple syrup) for a different spin.