Ingredient ! cooking spray. package white cake mix. half  cup milk. 1 tablespoon milk. 2 eggs. 3 tablespoons vegetable oil. 2 tablespoons butter, melted. half  teaspoon vanilla extract. 4 ounces cream cheese, softened. 1 cup confectioners sugar, divided, plus more for dusting
3 tablespoons lemon juice. 1 teaspoon grated lemon zest. 2 cups heavy whipping cream
Preparation !Preheat oven to 350 degrees Fahrenheit . Spray the bottom of a 10-inch springform pan with cooking spray.Measure 1 cup cake mix set aside for crumb topping. Place the remaining cake mix in a large bowl. add three by four cup plus 1 tablespoon milk, eggs, and oil. Beat cake mix mixture using an electric mixer until batter is thoroughly combined, about 2 minutes. Pour batter into the prepared pan. Mix melted butter and vanilla extract together in a bowl, stir in reserved 1 cup cake mix until mixture is crumbly. Sprinkle crumbs over top of cake batter. Bake in the preheated oven until a toothpick inserted in the center of the cake comes out clean, 30 to 35 minutes. Cool cake to room temperature in the pan. Beat cream cheese, 1 cup confectioners sugar, lemon juice, and lemon zest together in a bowl until smooth and creamy. Beat cream and remaining 1 cup confectioners sugar together in a separate bowl using an electric mixer until stiff peaks form. Fold cream cheese mixture into whipped cream. Remove cake from spring form pan. Cut cake horizontally into 2 layers using a serrated knife remove top layer cake