"Super thick and fluffy sugar cookie bars topped with deliciously creamy buttercream frosting. Quick and easy recipe...."
INGREDIENTS
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FOR THE COOKIE BARS: * 2½ cups (320g) plain (all-purpose) flour, sifted * ½ tsp baking powder * ½ tsp salt * ½ cup/1 stick (113g) butter, softened * 1 cup (200g) granulated sugar * 1 egg * 1½ tbsp sour cream * 1 tsp vanilla e
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* ½ cup/1 stick (113g) butter, softened * 4 cups (500g) icing (confectioners’) sugar, sifted * ¼ cup half and half (see notes) * 1 tsp vanilla extract * pinch of salt * (optional) paste or gel food colouring