Lunchbox Cakes – Sugar Geek Show

Ingredients

• 1 box strawberry cake mix (or white if you can't find strawberry)
• 1 cup all purpose flour ((5 oz))
• 1 cup granulated sugar ((7 oz))
• 1/4 teaspoon salt
• 1 cup sour cream ((8 oz) room temperature)
• 1/2 cup melted unsalted butter ((4 oz) )
• 1/2 cup milk
• 3/4 cup strawberry puree or preserves ((6 oz) strawberry puree recipe)
• 3 large eggs
• 1 teaspoon strawberry emulsion or extract
• 1/2 teaspoon lemon extract
• 24 ounces powdered sugar (sifted if not from a bag)
• 6 ounces pasteurized egg whites (room temperature)
• 24 ounces unsalted butter (room temperature)
• 1/2 teaspoon salt
• 2 teaspoons vanilla extract
• various gel food colors
• 1 cup strawberry preserves (or any filling you like)