I've baked dozens of cookie recipes over the years, but this 1 recipe is most requested year over year

1 cup (2 sticks) unsalted butter, softened
1/2 cup powdered sugar
1 teaspoon vanilla extract
2 cups all-purpose flour
1/2 cup raspberry jam or preserves
1 cup powdered sugar (for drizzle)
2-3 tablespoons milk (for drizzle)
1/2 teaspoon vanilla extract (for drizzle)
Directions