Strawberry Cream–Filled Sandwich Cookies

In a blender, puree strawberries. In a medium saucepan over medium-high heat, whisk pureed strawberries, 1/4 cup confectioners' sugar, and lemon juice until thickened and reduced by half, about 10 minutes. Set aside to cool.

In a medium bowl, combine cream cheese and butter. Stir in remaining confectioners' sugar. Stir in strawberry mixture, cover with plastic wrap, and chill for 1 hour.

Place 1 scant tablespoon strawberry cream each on 18 shortbread rounds. Top each with another round. Chill until ready to serve.