Published in: America's Test Kitchen
Publish Date: January, 2010

Lemon-Sugar Topping:
1/3 cup sugar (2 1/3 ounces)
1 1/2 teaspoon finely grated zest from 1 lemon

2 cup fresh blueberries (about 10 ounces) -- picked over
1 1/8 cup sugar (8 ounces) plus 1 teaspoon
2 1/2 cup unbleached all-purpose flour (12 1/2 ounces)
2 1/2 teaspoon baking powder
1 teaspoon table salt
2 large eggs
4 tablespoon (1/2 stick) unsalted butter -- melted and cooled slightly
1/4 cup vegetable oil
1 cup buttermilk (see note)
1 1/2 teaspoon vanilla extract

FOR THE TOPPING: Stir together sugar and lemon zest in small bowl until combined; set aside.

FOR THE MUFFINS: Adjust oven rack to upper-middle position and heat oven to 425 degrees. Spray standard muffin tin with nonstick cooking spray. Bring 1
cup blueberries and 1 teaspoon sugar to simmer in small saucepan over medium heat. Cook, mashing berries with spoon several times and stirring
frequently, until berries have broken down and mixture is thickened and reduced to 1/4 cup, about 6 minutes. Transfer to small bowl and cool to room
temperature, 10 to 15 minutes.

Whisk flour, baking powder, and salt together in large bowl. Whisk remaining 1 1/8 cups sugar and eggs together in medium bowl until thick and
homogeneous, about 45 seconds. Slowly whisk in butter and oil until combined. Whisk in buttermilk and vanilla until combined. Using rubber spatula,
fold egg mixture and remaining cup blueberries into flour mixture until just moistened. (Batter will be very lumpy with few spots of dry flour; do not

Use an ice cream scoop or large spoon to divide batter equally among prepared muffin cups (batter should completely fill cups and mound slightly).
Spoon a teaspoon of cooked berry mixture into center of each mound of batter. Using chopstick or skewer, gently swirl berry filling into batter using
figure-eight motion. Sprinkle lemon sugar evenly over muffins.

Bake until muffin tops are golden and just firm, 17 to 19 minutes, rotating muffin tin from front to back halfway through baking time. Cool muffins in
muffin tin for 5 minutes, then transfer to wire rack and cool 5 minutes before serving.

Step-by-Step: Making Muffins with Blueberry Flavor Through and Through

Cook half of fresh blueberries into thick jam to concentrate their flavor and eliminate excess moisture.

Stir 1 cup of fresh blueberries into batter to provide juicy bursts in every bite.

Scoop batter into muffin pans, completely filling cups.

Place 1 teaspoon of cooled berry jam in center of each batter-filled cup, pushing it below surface.

Using chopstick or skewer, swirl jam to spread berry flavor throughout.

Step-by-Step: When More Isn't Better
To boost berry flavor in a muffin, simply adding more blueberries isn't the answer. With too many in the mix, the berries sink to the bottom, weighing
the muffin down.

Recipe Notes
If buttermilk is unavailable, substitute 3/4 cup plain whole-milk or low-fat yogurt thinned with 1/4 cup milk.

Makes 12 muffins

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