1/4 cup raspberry puree jam, preserves (or 1 tablespoon raspberry jello powder)
3-4 cups powdered sugar
1 tsp. lemon zest optional
1 tsp. vanilla extract
1 cup unsalted butter room temperature
1 1/2 tsp. vanilla extract
2 tbsp. freshly-squeezed lemon juice
2 tbsp. milk
1 cup sour cream
1 tsp. salt
1 tbsp. baking powder
1/2 cup cornstarch
2 1/2 cups flour
4 eggs
2 small lemons Zest
2 cups sugar
1 cup unsalted butter room temperature