Sour Cream Blueberry Muffins Recipe

These sour cream blueberry muffins are soft, domed breakfast muffins made with ½ cup of full fat sour cream, oil, eggs, and a cup of fresh or frozen blueberries. The recipe makes 12 standard muffins, takes about 15 minutes to mix, and bakes at 375°F for 18 to 22 minutes.

Sour cream is the reason they stay moist on day two. It thickens the batter so it scoops cleanly and rises into a tall dome, and its tang keeps the muffins from tasting only sweet. Tossing the berries in a spoonful of flour keeps them from sinking.

Good to Know Before You Bake

• Yield: 12 standard muffins, one 12 cup muffin tin
• Time: 15 minutes prep, 18 to 22 minutes baking, about 35 minutes total
• Oven: 375°F (190°C), center rack
• Key ratio: ½ cup sour cream and ½ cup oil to 1¾ cups flour
• Fill: each cup about three quarters full
• Storage: 2 days on the counter, 5 days in the fridge, 2 months in the freezer

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Why Blueberry Muffins With Sour Cream Stay Moist

Sour cream adds fat and body in a way milk cannot. The batter holds together without running, so each muffin keeps its shape in the cup and rises up instead of spreading out. During baking, the acidity works with the baking soda for extra lift, and the fat keeps the crumb tender.

I use neutral oil instead of butter because it keeps the crumb plush and the muffins soft for longer. Melted butter works too and gives a little more flavor, so choose based on what matters more to you. Many blueberry muffin recipes dry out by the second day or collapse in the middle. These hold their shape and taste even better the next morning.

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Sour Cream vs Buttermilk vs Greek Yogurt

This is the question I get most, so here is how the three compare in this batter:

• Sour cream: thickest and richest. Gives the softest crumb, the tallest dome, and the best shelf life. Full fat works best.
• Greek yogurt: the closest swap, cup for cup. I have tried it, and it works, but the crumb turns a little tighter and less plush.
• Buttermilk: much thinner and lower in fat. Swapping it straight in gives a looser batter and flatter tops, so it is better in a recipe written for buttermilk than as a direct replacement here.

If you want a muffin built around sour cream with no fruit at all, my plain sour cream muffins use the same idea, and the blueberry sour cream coffee cake takes it into a crumb topped cake.

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The Ingredients and What Each One Does

All purpose flour gives structure without toughness. I do not sift it, but I fluff it and level the cup so it is not packed. Granulated sugar sweetens and helps the tops brown, while baking powder and a little baking soda share the job of lifting the batter into a bakery style dome.

Two large eggs bind everything, and 1½ teaspoons of vanilla rounds out the flavor. Fresh blueberries are lovely when they are in season, but frozen berries hold their shape better in batter. For the batch in these photos I used frozen berries, tossed in flour before folding them in. Do not thaw them first, or they will bleed purple streaks through the batter.

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Mixing and Baking, Step by Step

Heat the oven to 375°F and line a 12 cup muffin tin. Whisk the flour, sugar, baking powder, baking soda, and salt in a large bowl. Make a well, then add the sour cream, oil, eggs, and vanilla.

Stir only until the dry flour disappears. The batter should look thick and a little lumpy, and that is exactly right. Overmixing is the most common cause of tough, tunnelled muffins.

Toss the blueberries with 1 tablespoon of flour and fold them in last, gently. Fill the cups about three quarters full. A medium cookie scoop keeps the muffins even so they bake at the same rate. For a berry center, layer half the batter, a spoon of berries, then the rest of the batter, the same trick I use in my blueberry cream cheese croissant casserole.

Bake on the center rack for 18 to 22 minutes, until the tops are golden with small cracks and a toothpick comes out clean or with a few moist crumbs. Frozen berries can add a minute or two. Cool in the pan for 5 minutes, then move the muffins to a rack so steam does not make the bottoms soggy.

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When Muffins Sink, Stick, or Stay Pale

• Muffins sank in the middle: expired baking powder, overmixing, or underbaking. Check the date on your leavening and bake until a toothpick comes out clean.
• Blueberries sank to the bottom: they were not coated in flour, or they were folded in too early. Toss them in flour and add them last.
• Purple, streaky batter: the frozen berries thawed. Keep them frozen until the moment you fold them in.
• Stuck to the liners: the muffins needed another minute to set, or they were unwrapped while hot.
• Pale tops: the oven runs cool. Check it with an oven thermometer, or move the rack up one level.
• Dry by the next day: overbaked, or stored uncovered. Start checking at 18 minutes and store them airtight once cool.

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Easy Ways to Change Them Up

• Add about 1 tablespoon of lemon zest for a bright lemon blueberry muffin.
• Swap the blueberries for chopped strawberries or raspberries, using the same flour toss.
• Sprinkle coarse sugar on top before baking for a crunchy bakery top.
• Cut the sugar by 2 tablespoons if you like them less sweet. The sour cream tang keeps them balanced.

For more ideas, the lemon poppy seed muffins and strawberry banana muffins are good next bakes, and the easy blueberry muffins with oats are a heartier option. In the colder months, cranberry orange muffins are a nice holiday swap.

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Keeping and Freezing Muffins

Store cooled muffins in an airtight container on the counter for 2 days. In the fridge they last up to 5 days; lining the container with a paper towel keeps the tops from getting sticky. To freeze, pack cooled muffins in a freezer bag for up to 2 months. Warm one in the microwave for 20 to 30 seconds, or bake from frozen at 300°F for about 10 minutes.

Serve them warm with butter, or split and toast them and spread with homemade blueberry jam. They also make a soft lunchbox treat. If you like a lighter, protein packed breakfast muffin, try my quinoa protein muffins.

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Readers Ask About These Muffins

Can I use frozen blueberries in sour cream muffins?

Yes. Use them straight from the freezer, toss them in 1 tablespoon of flour, and add a minute or two to the bake time.

Can I use Greek yogurt instead of sour cream?

Yes, swap it cup for cup. The muffins will still be moist, with a slightly tighter crumb.

Can I use buttermilk instead of sour cream in blueberry muffins?

It is not a direct swap. Buttermilk is much thinner, so the batter spreads and the muffins bake flatter. Greek yogurt is the better substitute.

Does light sour cream work?

It works, but full fat sour cream gives the best lift, softness, and shelf life.

How do I keep blueberries from sinking?

Coat them in 1 tablespoon of flour, keep the batter thick by not overmixing, and fold the berries in as the very last step.

Can I use butter instead of oil?

Yes. Use ½ cup melted butter. The flavor is richer, and the crumb is a little less soft after the first day.

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Pin It for Your Next Bake

Save these sour cream blueberry muffins to your breakfast board so they are ready for the next weekend bake. If you try a variation, tell me about it in the comments.