Easy Cake Mix Blueberry Muffins made with lemon cake mix, sour cream, and fresh blueberries. Bakery-style muffins ready in 28 minutes with no measuring flour or sugar.
Making muffins from cake mix is a fast, reliable shortcut. The lemon cake mix adds a bright citrus note that pairs beautifully with blueberries, while sour cream and butter keep the crumb tender and moist. These muffins taste balanced—not overwhelmingly sweet—and bake up with a light, bakery-style top.
One reader suggested adding lemon zest to the batter for extra zing and called them the best lemon blueberry muffins she’d ever made. It’s an easy tweak worth trying.
The most important tip: fold the blueberries in gently by hand with a spatula at the end. Overmixing will burst the berries and color the batter purple.
What you’ll love about these blueberry muffins with cake mix:
- Cake mix does the measuring for you. No separate measuring of flour, sugar, or leavening.
- Ready in 28 minutes start to finish, including bake time.
- Sour cream keeps them moist. Greek yogurt works as a one-to-one substitute.
Ingredients
Lemon cake mix (1 box, 15.25 oz): The base of the recipe. Lemon complements blueberries best, but yellow, white, or French vanilla cake mix will also work.
Sour cream (1 cup, full fat): Keeps muffins tender and moist. Full-fat plain Greek yogurt is a direct substitute.
Butter (¼ cup, melted): Salted or unsalted are fine. Melt it until warm but not hot so it doesn’t cook the eggs.
Eggs (2 large): Room temperature eggs mix more evenly.
Fresh blueberries (2 cups): Fresh gives the best texture. If using frozen, add them straight from the freezer so they don’t bleed into the batter.
Sparkling sugar (1½ tsp, optional): For a bakery-style crunch on top. Granulated sugar works too or omit if desired.
How Do You Make Muffins from Cake Mix?
Step 1: Preheat the oven to 375°F. Line a muffin pan with paper liners or spray with baking spray.
Step 2: In a medium bowl, whisk together the sour cream, melted butter, and eggs until smooth.
Step 3: Add the lemon cake mix and whisk until no dry spots remain.
Step 4: Gently fold in the blueberries with a spatula until evenly distributed. Avoid overmixing to prevent the berries from bursting.
Step 5: Scoop the batter into the prepared muffin pan, filling each cup about ¾ full. Sprinkle sparkling sugar on top if using.
Step 6: Bake 23 to 25 minutes, or until golden on top and a toothpick inserted into the center comes out with just a few moist crumbs.
Step 7: Let cool slightly before serving.
Pro tip: Don’t overmix after adding the blueberries. Fold gently until just combined—small streaks of batter are fine.
How Long Do Blueberry Muffins Keep?
Storage: Store in an airtight container at room temperature up to 3 days, or refrigerate up to 5 days.
Reheating: Serve at room temperature or warm for 10–15 seconds in the microwave for that fresh-baked feel.
Freezing: Freeze in a freezer-safe bag for up to 3 months. Thaw at room temperature or warm briefly before serving.
What Can I Add to Blueberry Muffins?
A lemon glaze (powdered sugar + lemon juice) is a simple way to boost citrus flavor. A teaspoon of lemon extract in the batter and a drizzle of glaze is a reader favorite.
A streusel topping of flour, butter, and brown sugar adds a crunchy bakery finish. Fold in chopped pecans or walnuts for texture, or swap some blueberries for raspberries or blackberries for variety.
Substitutions: Greek yogurt for sour cream (1:1), any cake mix flavor for lemon, or vegetable/coconut oil for butter at a 1:1 ratio.
Frequently Asked Questions
Can you make muffins with cake mix?
Yes. Cake mix already contains flour, sugar, and leavening. Add eggs, sour cream, and butter for the right texture.
Why are my muffins dry?
They’re usually overbaked. Start checking at 20 minutes. They’re done when a toothpick has a few moist crumbs, not when it comes out completely clean.
Can I use frozen blueberries?
Yes. Keep them frozen and fold them into the batter straight from the freezer to avoid purple streaking.
Can I use yellow cake mix instead of lemon?
Absolutely. Yellow, white, or French vanilla are good substitutes; lemon simply enhances the berry flavor.
Can I make these in a large muffin tin?
Yes. Bake at the same temperature but increase the time to about 28–30 minutes and check doneness with a toothpick.
Make-Ahead
Bake and store at room temperature for up to 3 days or freeze for up to 3 months.
What Goes Well With Blueberry Muffins?
Serve with coffee or tea for breakfast or brunch. They pair well with scrambled eggs, fresh fruit, or simply warmed with a pat of butter or a drizzle of honey.
Recipe
Easy Cake Mix Blueberry Muffins
Servings: 12 muffins
Prep Time: 5 mins • Cook Time: 23 mins • Total Time: 28 mins
Ingredients
- 1 cup sour cream
- 1/4 cup unsalted butter, melted
- 2 large eggs
- 1 (15.25 oz) lemon cake mix
- 2 cups fresh blueberries
- 1 1/2 teaspoons sparkling sugar (optional)
Instructions
- Preheat oven to 375°F and line a muffin tin with paper liners or spray with baking spray.
- In a medium bowl, whisk together the sour cream, melted butter, and eggs. Add the cake mix and whisk until no dry spots remain.
- Fold in the blueberries gently with a spatula. Scoop batter into the prepared muffin tin, filling each cup about ¾ full. Sprinkle sparkling sugar if using.
- Bake 23–25 minutes until golden and a toothpick inserted in the center comes out with a few moist crumbs. Cool slightly before serving.
Notes
Gently fold in blueberries to avoid bursting them and dulling the batter’s color. A few streaks of batter are fine.
Nutrition (per muffin)
Calories: 87.1 kcal (approximate)
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