Blueberry cake doughnuts are the kind of treat that makes a morning feel a little special. They’re tender inside, lightly crisp at the edges, and filled with juicy pops of blueberry in every bite. You don’t need a mixer, fancy tools, or a deep fryer to make them happen—just a bowl, a pan, and a handful of pantry staples.

Whether you glaze them or dust them with sugar, these doughnuts are simple, nostalgic, and always a hit.

Why This Recipe Works

This recipe relies on a classic cake doughnut batter, which means it’s quick to mix and easy to handle. Sour cream and buttermilk add moisture and tang, keeping the doughnuts soft while preventing them from drying out. A blend of baking powder and baking soda gives a reliable rise for a fluffy crumb. Folding in fresh or frozen blueberries introduces bursts of sweetness without weighing down the batter.

Finally, a simple glaze adds shine and a hint of vanilla, sealing in moisture and giving that bakery-style finish.

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Blueberry Cake Doughnuts

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Ingredients

  

• All-purpose flour – 2 1/2 cups, spooned and leveled
• Granulated sugar – 3/4 cup
• Baking powder – 2 teaspoons
• Baking soda – 1/2 teaspoon
• Kosher salt – 1/2 teaspoon
• Ground nutmeg – 1/2 teaspoon (classic doughnut flavor)
• Unsalted butter – 4 tablespoons, melted and cooled
• Large eggs – 2, at room temperature
• Sour cream – 1/2 cup
• Buttermilk – 1/2 cup (or milk with 1 teaspoon lemon juice)
• Vanilla extract – 2 teaspoons
• Blueberries – 1 cup fresh or frozen (no need to thaw)
• Neutral oil for frying – canola or peanut oil, if deep-frying

Optional vanilla glaze:

• Powdered sugar – 1 1/2 cups
• Milk – 2–3 tablespoons
• Vanilla extract – 1 teaspoon
• Pinch of salt

Optional cinnamon-sugar coating:

• Granulated sugar – 1/2 cup
• Ground cinnamon – 1 teaspoon

Instructions

 

• Prep your station. If baking, preheat the oven to 375°F (190°C) and lightly grease a doughnut pan. If frying, heat 2–3 inches of oil in a heavy pot to 350°F (175°C) and set a paper towel–lined tray nearby.
• Mix dry ingredients. In a large bowl, whisk flour, sugar, baking powder, baking soda, salt, and nutmeg until evenly combined.
• Combine wet ingredients. In a separate bowl, whisk melted butter, eggs, sour cream, buttermilk, and vanilla until smooth.
• Bring it together. Pour the wet ingredients into the dry and stir with a spatula just until no dry streaks remain. The batter should be thick but scoopable. Avoid overmixing.
• Fold in blueberries. Toss blueberries with 1 teaspoon of flour to help prevent sinking, then gently fold them into the batter. Be careful not to crush them, especially if using thawed berries.
• For baked doughnuts. Spoon the batter into a piping bag or zip-top bag, snip the corner, and pipe into the doughnut pan wells about 3/4 full. Bake 11–14 minutes, until the tops spring back and a toothpick comes out clean. Cool in the pan for 5 minutes, then transfer to a rack.
• For fried doughnuts. Lightly flour a work surface. Turn out the dough and pat it to 1/2-inch thick. Use a doughnut cutter or two round cutters to shape. Fry 1–2 minutes per side until golden. Work in batches to keep oil temperature steady. Drain on the prepared tray.
• Make the glaze. Whisk powdered sugar, milk, vanilla, and a small pinch of salt until smooth and pourable. Add a few drops more milk if needed. For cinnamon-sugar, mix sugar and cinnamon in a shallow bowl.
• Finish the doughnuts. While warm, dip baked or fried doughnuts in the glaze and set on a rack to allow excess to drip. Or roll them in cinnamon-sugar for a classic coating. For extra blueberry punch, add a few mashed berries to the glaze and whisk in more powdered sugar to thicken.
• Serve. Enjoy slightly warm for the best texture. The crumb will be soft, tender, and bursting with blueberry flavor.

How to Store

Let doughnuts cool completely before storing. Keep glazed doughnuts in an airtight container at room temperature for up to 2 days.

Unglazed doughnuts hold a bit longer—up to 3 days—and can be refreshed in a 300°F oven for 5 minutes.

For longer storage, freeze unglazed doughnuts in a single layer until firm, then transfer to a freezer bag for up to 2 months. Thaw at room temperature and glaze just before serving. Avoid refrigerating, as it can dry them out.

Health Benefits

• Blueberries bring antioxidants, vitamin C, and fiber, adding natural sweetness and color without heavy add-ins.
• Portion control is built-in—one doughnut satisfies a craving without going overboard.
• Baked option reduces oil and overall fat compared to deep-fried versions.
• Dairy swaps like Greek yogurt can add more protein if desired.

These are still a treat, but small tweaks like baking, using fresh berries, and a light glaze help keep them more balanced.

What Not to Do

• Don’t overmix the batter. This leads to tough, dense doughnuts.
• Don’t overfill the pan. Baked doughnuts need room to rise; 3/4 full is the sweet spot.
• Don’t fry in oil that’s too cool or too hot. Below 340°F, doughnuts absorb oil; above 365°F, they brown outside but stay raw inside.
• Don’t thaw frozen blueberries. Use straight from the freezer to prevent streaking and excess moisture.
• Don’t glaze while piping hot. Let them cool a few minutes so the glaze sets instead of slipping off.

Variations You Can Try

• Lemon-Blueberry: Add 1 tablespoon lemon zest to the batter and 1 tablespoon lemon juice to the glaze.
• Brown Butter Glaze: Swap melted butter in the glaze for browned butter for a nutty, caramel note.
• Blueberry Crumble: Sprinkle a quick streusel (butter, flour, sugar) over baked doughnuts before the last 3 minutes of baking.
• Maple-Vanilla: Replace milk in the glaze with maple syrup and a touch of milk to thin.
• Whole Wheat Twist: Replace 3/4 cup of the flour with white whole wheat for a heartier crumb.
• Cardamom Spice: Swap nutmeg for 1/2 teaspoon ground cardamom for a fragrant, modern flavor.

FAQ

Can I use frozen blueberries?

Yes.

Use them straight from the freezer and toss with a little flour before folding in. Don’t thaw, or you’ll get streaky batter and excess moisture.

What if I don’t have a doughnut pan?

You can pipe the batter into ring shapes on a parchment-lined sheet and bake, though they’ll be flatter. Or chill the batter, roll it gently with flour, and cut into rounds for frying.

How do I keep the blueberries from sinking?

Toss them with a teaspoon of flour and fold in gently at the end.

A thicker batter also helps suspend the fruit, so avoid adding extra liquid.

Can I make the batter ahead?

It’s best used right away. Leavening starts working as soon as wet and dry ingredients meet. If needed, mix the dry and wet separately, then combine just before baking or frying.

Are baked doughnuts as good as fried?

They’re different.

Baked doughnuts are lighter and more cake-like with a tender crumb, while fried doughnuts have a crisp exterior and richer flavor. Both are delicious—just pick what suits your mood.

Why is nutmeg used in doughnuts?

Nutmeg gives that classic old-fashioned doughnut flavor. It’s warm and aromatic without overpowering the blueberries.

You can swap it for cinnamon or cardamom if you prefer.

Can I make them gluten-free?

Yes. Use a cup-for-cup gluten-free flour blend that includes xanthan gum. The texture may be slightly more delicate, so handle the batter gently and avoid overbaking.

What oil is best for frying?

Use a neutral, high-heat oil like canola, peanut, or sunflower.

They’re stable at frying temperatures and won’t compete with the blueberry flavor.

Wrapping Up

Blueberry cake doughnuts are simple to make and even easier to love. With a soft crumb, bright pockets of fruit, and a glossy glaze or cozy cinnamon-sugar coat, they feel special without much fuss. Keep this recipe in your back pocket for weekend breakfasts, brunch spreads, or a weekday pick-me-up.

Once you’ve tried the base, play with flavors and glazes to make it your own—there’s plenty of room to get creative.