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Blueberry Swirl Muffins

Blueberry Swirl Muffins

These blueberry swirl muffins were declared the best blueberry muffins by America’s Test Kitchen so of course, I had to give the recipe a try. I love that you cook down half the blueberries until you get a jam–it gives the muffin a more intense blueberry flavor. You make the remaining batter while the jam cools then fill the muffin tin evenly with the batter. Next, you swirl teaspoons of the jam in each of the mounds of batter with a wooden skewer. Lastly, you sprinkle some lemon zest sugar on top and bake. My kids each ate two in one sitting and absolutely loved them! I really enjoyed the crisp top from the lemon sugar and the really intense blueberry flavor from the swirl of jam.

Blueberry Swirl Muffins

How to Make Blueberry Swirl Muffins

Make the lemon sugar by stirring the white sugar with the lemon zest together in a small bowl; set aside.

Make sure the oven rack is in the upper-middle position. Preheat the oven to 425 degrees and coat a muffin tin with cooking spray.

Make the jam by bringing 1 cup of blueberries and 1 teaspoon of sugar to simmer in a small saucepan over medium heat. Cook, mashing the berries with a spoon several times and stirring them frequently until the blueberries have broken down and the mixture is thickened and reduced to about 1/4 cup, about 6-8 minutes. Transfer jam to a small bowl and cool to room temperature.

Make the muffins by whisking the flour, baking powder, and salt together in a large bowl.

In a separate bowl, whisk the sugar and eggs together until thick and creamy, about 45 seconds. Slowly whisk in the butter and oil until combined. Whisk in the buttermilk and vanilla until combined.

Using a rubber spatula, fold the egg mixture and blueberries into the flour mixture until just moistened. Don’t overmix.

Divide the batter evenly in the prepared muffin tin. The batter should fill the cups and be slightly mounded. Spoon a teaspoon of the cooled jam in the center of each mound of batter. Using a wooden skewer, gently swirl the berry jam into the batter using figure-eight motion.

Blueberry Swirl Muffins

Sprinkle the lemon sugar evenly over the muffins.

Bake until the muffin tops are golden and just firm, 16-18 minutes, rotating muffin halfway through baking time.

Remove and cool muffins in the tin for 5 minutes before transferring to a rack to cool for another 5 minutes. Serve and enjoy.

Blueberry Swirl Muffins

Blueberry Swirl Muffins

Blueberry Swirl Muffins

Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
Course: Breads and Muffins
Cuisine: American
Servings: 12
Author: Pam / For the Love of Cooking - Original by America's Test Kitchen

Equipment

Ingredients

Lemon Sugar:

  • cup white sugar
  • tsp finely grated lemon zest

Blueberry Swirl Muffins:

  • 2 cups fresh blueberries, picked over, divided
  • 1⅛ cups + 1 teaspoon white sugar, divided
  • cups flour
  • tsp baking powder
  • 1 tsp table salt
  • 2 large eggs, room temperature
  • 4 tbsp unsalted butter, melted & cooled slightly
  • ¼ cup vegetable oil
  • 1 cup buttermilk
  • tsp vanilla extract

Instructions

  • Make the lemon sugar by stirring the white sugar with the lemon zest together in a small bowl; set aside. 
  • Make sure the oven rack is in the upper-middle position. Preheat the oven to 425 degrees and coat a muffin tin with cooking spray. 
  • Make the jam by bringing 1 cup of blueberries and 1 teaspoon of sugar to simmer in a small saucepan over medium heat.
  • Cook, mashing the berries with a spoon several times and stirring them frequently, until the blueberries have broken down and the mixture is thickened and reduced to about 1/4 cup, about 6-8 minutes. Transfer jam to a small bowl and cool to room temperature. 
  • Make the muffins by whisking the flour, baking powder and salt together in a large bowl
  • In a separate bowl, whisk the sugar and eggs together until thick and creamy, about 45 seconds.
  • Slowly whisk in the butter and oil until combined. Whisk in the buttermilk and vanilla until combined. 
  • Using a rubber spatula, fold the egg mixture and blueberries into the flour mixture until just moistened. Don't overmix.
  • Divide the batter evenly in the prepared muffin tin. Batter should fill the cups and be slightly mounded. 
  • Spoon a teaspoon of the cooled jam in the center of each mound of batter. Using a wooden skewer, gently swirl the berry jam into batter using figure-eight motion.
  • Sprinkle the lemon sugar evenly over the muffins. 
  • Bake until the muffin tops are golden and just firm, 16-18 minutes, rotating muffin halfway through baking time. 
  • Remove and cool muffins in the tin for 5 minutes before transferring to a rack to cool for another 5 minutes.
  • Serve and enjoy. 
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13 Comments

  1. These are the best blueberry muffins! I’m afraid to ask but what is the nutritional breakdown per muffin? Thanks!