Does blueberry coffee cake have coffee in it?

No, this cake does not contain any actual coffee in the batter or topping. The name comes from the long-standing American tradition of serving this style of sweet, crumb-topped cake alongside a hot cup of coffee. It is designed to complement the bitter, rich profile of a fresh brew.

How do I stop blueberries from sinking to the bottom?

Toss your blueberries in a single tablespoon of flour before scattering them over the batter. This simple step creates a textured coating that helps the berries cling to the batter rather than sliding to the bottom during baking. It works equally well for fresh or frozen fruit.

Can I use frozen blueberries instead of fresh?

Yes, frozen blueberries work beautifully in this recipe without any structural changes. Do not thaw them before adding to the cake, as this will release excess juices and turn your entire batter a dull grey color. Add them straight from the freezer for the best results.

What's the difference between a coffee cake and a crumb cake?

Coffee cakes generally have a higher ratio of cake to topping, often featuring a simple cinnamon ripple inside. A crumb cake is defined by its thick, heavy layer of streusel, which usually equals or exceeds the height of the cake layer itself. Our recipe leans toward the crumb cake style with its generous topping.

How do I know when the cake is fully baked?

Insert a wooden toothpick or skewer into the exact center of the cake at the forty-minute mark. It should emerge clean or with a few moist crumbs; if you see wet batter, bake for another five minutes and test again. Avoid opening the oven door too early, as this can cause the center to collapse.

Can I substitute sour cream for the buttermilk?

Yes, sour cream makes an excellent substitute and will produce an even richer, denser crumb. Use an equal amount of full-fat sour cream, whisking it well to remove any lumps before adding it to your wet ingredients. If you want a fun story on this variation, read our [sour cream peach coffee cake story](https://cakehalf.com/web-stories/sour-cream-peach-coffee-cake-story/) to see how sour cream behaves in coffee cakes.

How do I store blueberry crumb cake?

Keep any leftovers in an airtight container at room temperature for up to three days. For longer storage, wrap individual slices tightly in plastic wrap and freeze them for up to three months before warming them in a low oven. This preserves the crunchy texture of the streusel topping.

Can I make the batter ahead of time?

You should avoid making the entire batter ahead of time because the baking soda activates as soon as it touches liquid. However, you can prep the streusel and dry ingredients the night before to save time in the morning. Simply combine the wet and dry components right before you are ready to bake.

Classic Blueberry Coffee Crumb Cake: Step-by-Step Guide

Name: Classic Blueberry Coffee Crumb Cake
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: American
Ingredients: 2 cups all-purpose flour; 1/2 cup granulated sugar; 1 tablespoon baking powder; 1/2 teaspoon baking soda; 1/4 teaspoon salt; 1 cup buttermilk; 2 large eggs; 1/2 cup melted butter; 1 1/2 cups fresh or frozen blueberries; 1/4 cup all-purpose flour (for streusel); 1/4 cup brown sugar (for streusel); 1 teaspoon cinnamon (for streusel); 2 tablespoons softened butter (for streusel)

Description

This small-batch coffee cake achieves a perfectly moist, tender crumb by utilizing melted butter and a quick-bread technique. Topped with a generous layer of cinnamon-spiced streusel, it provides an ideal balance of soft cake, jammy fruit, and a satisfying crunch in every bite.

Ingredients

2 cups all-purpose flour
1/2 cup granulated sugar
1 tablespoon baking powder
1/2 teaspoon baking soda
1/4 teaspoon salt
1 cup buttermilk
2 large eggs
1/2 cup melted butter
1 1/2 cups fresh or frozen blueberries
1/4 cup all-purpose flour (for streusel)
1/4 cup brown sugar (for streusel)
1 teaspoon cinnamon (for streusel)
2 tablespoons softened butter (for streusel)

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Instructions

Prep the pan. Preheat your oven to 350°F (175°C) and grease an eight-inch square baking pan, lining the bottom with parchment paper for easy removal.
Prepare the streusel. In a medium bowl, whisk together flour, brown sugar, and cinnamon, then work in the softened butter until large, distinct crumbs form.
Whisk dry ingredients. Combine the two cups of flour, granulated sugar, baking powder, baking soda, and salt in a large bowl, whisking vigorously for thirty seconds.
Blend wet ingredients. In a separate container, whisk together the buttermilk, room-temperature eggs, and cooled melted butter until the mixture is pale and smooth.
Merge into batter. Pour the wet mixture into the dry ingredients and fold gently with a spatula until just incorporated, leaving a few dry streaks to prevent overworking.
Assemble the cake. Spread the thick batter into the prepared pan, scatter the blueberries evenly on top, and cover with the prepared cinnamon streusel.
Bake the cake. Place on the center rack and bake for forty minutes until a skewer comes out clean, then cool completely in the pan on a wire rack before slicing.

Notes

Use a kitchen scale for flour to prevent the cake from becoming dense or dry.
Toss blueberries in a light coating of flour to prevent them from sinking during the bake.
Ensure eggs are at room temperature to prevent the melted butter from seizing during mixing.
Avoid overmixing the batter, as a few remaining flour streaks are preferable to a tough texture.
Bake in a light-colored metal pan to ensure the edges remain soft while the center cooks through.

Prep Time: 20 mins
Cook Time: 40 mins
Category: Breakfast
Method: Baking
Cuisine: American