Spring Time Lemon Cake with Raspberry Frosting Recipe

Name: Spring Time Lemon Cake with Raspberry Frosting Recipe
Ingredients: 9 tablespoons unsalted butter, room temperature; 1 cup sugar; 3 eggs, separated; 2 cups all purpose flour; 1 tablespoon baking powder; 1 teaspoon salt; 1/2 teaspoon baking soda; 1 cup plain greek yogurt; 2 teaspoons lemon zest; 1/2 tsp lemon extract; 2 sticks unsalted butter, room temperature (1 cup); 1 cup raspberries; 2 tsps milk, eliminate if using frozen raspberries; 1 tsp of vanilla extract; 4 1/2 cups powdered sugar