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5 from 1 vote

Lemon Sheet Cake with Crunchy Topping

Prep Time10 minutes
Cook Time40 minutes
Servings: 16 servings
Calories: 340kcal

Ingredients

CAKE

  • 2 ½ cups cake flour OR 2 cups plus 3 tablespoons all purpose flour and 5 tablespoons cornstarch
  • 1 teaspoon baking powder
  • ½ teaspoon baking soda
  • ½ teaspoon salt
  • zest of 3 lemons
  • 1 ¾ cup granulated sugar
  • ¾ cup buttermilk at room temperature
  • ¼ cup lemon juice
  • 1 teaspoon vanilla
  • 12 tablespoon 1 ½ sticks butter, room temperature
  • 3 eggs plug 1 egg yolk room temperature

GLAZE

  • 3 cups powdered sugar
  • 3 tablespoons lemon juice
  • 2 tablespoons buttermilk

Instructions

  • Preheat oven to 325° and grease and flour a 13x9 pan. Or line the pan with parchment and grease.
  • In a large bowl, combine cake flour (or all purpose and cornstarch), baking soda, making powder, and salt together. Mix and set aside.
  • In a separate bowl, mix zest and sugar together until moist and fragrant, about 1 minute. Transfer ¼ cup of that mixture to a small bowl and set aside for later.
  • In a liquid measuring cup, combine buttermilk, lemon juice, and vanilla.
  • Add butter to remaining sugar mixture and beat until light and fluffy. About 2 minutes. Beat in eggs and yolk, one at a time, until incorporated.
  • Add flour mixture ⅓ at a time, alternating with buttermilk mixture until all is incorporated and smooth.
  • Pour mixture into prepared pan and bake for 35-40 min (mine took 39).
  • Let cool for 10 minutes. I set a timer for this so I wouldn't forget.
  • While cake is cooling mix glaze ingredients together.
  • Gently spread over warm cake and sprinkle with reserved lemon sugar.
  • Let cool for at least 2 hours before serving.

Nutrition

Calories: 340kcal | Carbohydrates: 60g | Protein: 4g | Fat: 10g | Saturated Fat: 6g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.3g | Cholesterol: 55mg | Sodium: 228mg | Potassium: 59mg | Fiber: 0.5g | Sugar: 45g | Vitamin A: 329IU | Vitamin C: 3mg | Calcium: 41mg | Iron: 0.4mg