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Lemon Blueberry Sheet Cake

Lemon Blueberry Sheet Cake

Bright, tangy lemon meets bursts of sweet blueberries in this easy sheet cake that's perfect for gatherings or a cozy weekend treat. Simple to make and gorgeous to serve, every bite feels like sunshine on a plate.
Prep Time 15 minutes
Cook Time 30 minutes
Cooling Time 30 minutes
Total Time 1 hour 15 minutes
Course Brunch, Dessert
Cuisine American
Servings 12 squares
Calories 250 kcal

Equipment

  • 1 Sheet pan about 9x13 inch
  • 1 hand mixer or stand mixer for creaming
  • 2 Mixing Bowls

Ingredients
  

  • 2 cups all-purpose flour plus 1 tsp for coating blueberries
  • 2 tsp baking powder
  • 0.5 tsp salt
  • 0.75 cup unsalted butter softened
  • 1.25 cups granulated sugar
  • 3 eggs room temperature
  • 0.75 cup plain yogurt or sour cream
  • 2 lemons, zested and juiced about 2 lemons total
  • 2 tsp vanilla extract alcohol-free, if desired
  • 1.5 cups blueberries, fresh or frozen do not thaw if frozen
  • 1 cup powdered sugar for glaze
  • 2 tbsp fresh lemon juice for glaze

Instructions
 

  • Cream together the softened butter and granulated sugar until light and fluffy. Beat in the eggs, yogurt (or sour cream), vanilla extract, lemon zest, and lemon juice. In a separate bowl, whisk together the flour, baking powder, and salt. Fold the dry ingredients into the wet until just combined. Toss the blueberries with 1 teaspoon flour and gently fold them into the batter.
  • Spread the batter evenly into a greased 9x13-inch sheet pan. Bake at 350°F (175°C) for 25 to 30 minutes, or until golden on top and a toothpick comes out clean from the center.
  • Let the cake cool fully in the pan. For the glaze, whisk together powdered sugar and 2 tablespoons fresh lemon juice until smooth. Drizzle the glaze over the cooled cake before cutting into squares.

Notes

  • Toss blueberries in a bit of flour before adding to the batter to help prevent sinking.
  • Do not overmix the batter for the lightest crumb.
  • Store cake tightly covered at room temperature up to 2 days, or refrigerated up to 5 days. Freeze slices up to 2 months; thaw at room temp.