Ingredients
1 stick salted softened butter
2 Cups or 10 oz. powdered sugar
1/2 teaspoon salt
2 Tablespoons whole milk
1 teaspoon pure vanilla extract
1/4 cup corn starch
1 Tablespoon sour cream
1 teaspoon vanilla yogurt
Preparation
cream butter and salt together, then add half the sugar and half the milk, combine throughly then add the rest of the ingredients. chill until needed, fresh for up to 3 days if well covered.
