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Blueberry Sheet Cake

Blueberry sheet cake on a wood cutting board and decorated with blueberries and vines.
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5 from 1 review

This blueberry sheet cake is the perfect combination of sweetness and tartness. It combines a fresh blueberry cake with cream cheese icing that's been loaded with blueberry jam and lemon curd. 

Ingredients

For the cake: 

  1. 2 1/4 cup all-purpose flour
  2. 1/2 tablespoon baking powder 
  3. 1/2 teaspoon salt
  4. 8 tablespoons of unsalted butter (one stick)
  5. 1 cup plus 2 tablespoons sugar
  6. 2 eggs
  7. 1/2 cup whole milk
  8. 1 teaspoon vanilla 
  9. Zest from 1 lemon 
  10. 3/4 cup pureed blueberries

For the icing:

  1. 8 ounces softened cream cheese
  2. 1/2 cup unsalted butter
  3. 4 cups powdered sugar (more for a firmer icing)
  4. 3 tablespoons blueberry jam
  5. 2 tablespoons lemon curd

Instructions

For the cake:

  1. Preheat oven to 350 degrees, line a 9x12in baking tray with parchment paper.
  2. Whisk flour, salt, and baking powder together in a large bowl.
  3. Cream butter and sugar together in a stand mixer until light and fluffy. About 3 minutes. 
  4. Add the eggs one at a time, beating completely before adding the next egg.
  5. Mix milk and vanilla together and while the mixer is on low, add 1/3 of the flour mixture followed by 1/3 of the milk, keep alternating wet and dry ingredients until all are incorporated.
  6. Add the zest from 1 lemon.
  7.  Pour in the pureed blueberries and mix to combine.
  8. Pour the batter into the baking tray and bake for 30-35 minutes or until the tops of the cupcakes spring back when gently touched and a toothpick inserted in the center comes out clean. Allow to cool in the pan for 5 minutes, then transfer to a rack to cool completely.

For the icing:

  1. Beat the softened butter and cream cheese together until its well mixed. 
  2. Add in the powdered sugar 1 cup at a time and beat well between each addition. 
  3. Add in the blueberry jam and lemon curd and mix well.

Find it online: https://thegandmkitchen.com/blueberry-sheet-cake/