Almond Sheet Cake

Ingredients

• For the cake
• 2 1/4 cups all-purpose flour
• 2 teaspoons baking powder
• 1/2 cup butter, at room temperature
• 1 1/3 cups sugar
• 3 eggs
• 1/2 teaspoon almond extract
• 3/4 cup milk
• 1/3 cup almond flour or meal
• For the frosting
• 1 cup milk
• 3 tablespoons all-purpose flour
• 1/2 teaspoon salt
• 1 cup butter, at room temperature
• 1 cup sugar
• 1/2 teaspoon almond extract