Blueberry Crunch Coffee Cake

This is the coffee cake for last-minute weekend brunches: 10 minutes of prep, 30 minutes in the oven, and you have a warm, fruit-loaded cake with a sandy cinnamon crunch on top. Two full cups of blueberries scatter across the batter so every slice gets generous fruit.

The crumb topping is the move that signals this isn’t just a fruit cake. Butter, sugar, flour, and cinnamon cut together with a fork or pastry blender forms a coarse, sandy texture that crisps in the oven and crunches against the tender cake below. Don’t make it too fine; lumpy is better.

Dropping berries on top of the batter (rather than folding them in) is also intentional. They sink slightly as the cake rises, creating jammy purple pockets without bleeding too much color into the surrounding crumb.

Pro Tips

• Toss frozen blueberries in a tablespoon of flour before scattering, this prevents excess bleeding
• Cream the butter and sugar until truly fluffy, that initial aeration is what gives the cake its rise
• Don’t overmix once flour goes in, gentle folding keeps the crumb tender
• Cut the topping butter in cold for the chunkiest crumbles
• Serve warm with coffee or a glass of cold milk

Variations

• Substitute raspberries, blackberries, or a mixed-berry blend for blueberries
• Add a teaspoon of lemon zest to the batter for citrus brightness
• Drizzle with a thin vanilla glaze (powdered sugar plus milk) after cooling for added sweetness