Ingredients
1 2/3 cups raisins
1/2 cup water
1/3 cup packed dark-brown sugar
1 tablespoon all-purpose flour
1 1/2 teaspoons finely grated lemon zest
3/4 teaspoon ground cinnamon
Preparation
Combine the raisins, water, sugar, flour, lemon zest, and cinnamon in a small saucepan over medium heat. Bring to a simmer. Cook, stirring frequently, until most of the liquid is absorbed, 3 to 5 minutes. Transfer to a food processor. Process until smooth. Refrigerate filling until cool and thickened slightly, about 1 hour.
