Ingredients
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1 cup (2 sticks) butter, softened
1/2 cup powdered sugar, sifted
2 tsp limoncello liqueur
1 tsp grated lemon peel
1 1/2 cups flour
1/2 cup cornstarch
None None FOR THE FILLING
7 tbsp butter, softened
1 cup powdered sugar, sifted
1 tbsp limoncello liqueur
1 tbsp grated lemon peel
Preparation
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Preheat the oven to 325\u00b0F. Lightly grease and line 2 baking pans with parchment paper.
Beat butter, powdered sugar, limoncello and lemon peel in a large bowl with an electric mixer until pale and creamy. Beat in combined flour and cornstarch until just combined.
Roll level tablespoons of mixture between floured hands. Place 2 inches apart on prepared pans. Flatten slightly using floured fork.
Bake 15-20 mins. Cool on pans 5 mins. Remove from pans; cool completely on a wire rack.
Meanwhile, for the filling, beat butter in a bowl with electric mixer until pale and creamy. Beat in remaining ingredients until smooth. Spread filling on half of the cookies. Sandwich together with remaining cookies.
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