Step 1

In a large bowl stir together flour, sugar, and salt. Using a pastry blender, cut in butter until mixture resembles fine crumbs. Stir in egg. Sprinkle 1 Tbsp. milk at a time over part of the flour mixture; gently toss with a fork. Push moistened mixture to side of bowl. Repeat, adding only enough milk until mixture begins to come together. Gather into a ball, kneading gently just until it holds together. (Or combine all ingredients except milk in a food processor. Pulse; add milk 1 Tbsp. at a time until dough comes together.) Divide pastry in half; form two balls. If desired, cover with plastic wrap and chill until ready to use.

Step 2

Preheat oven to 375°F. On a lightly floured surface slightly flatten one pastry ball. Roll into a 9×8-inch rectangle. Cut in half lengthwise to form two 9×4-inch rectangles; cut each in thirds crosswise to form six total 3x4-inch rectangles. Repeat with the remaining pastry ball.*

Step 3

Spread 1 Tbsp. jam each onto six rectangles. Moisten edges with additional milk; top with remaining pastry rectangles; press edges with a fork to seal. Using a floured spatula, transfer filled pastries to a baking sheet. Brush tops with additional milk.

Step 4

Bake 17 to 20 minutes or until golden. Remove; let cool on a wire rack 5 minutes. Drizzle with Cookie Glaze. Serve warm. Makes 6 pastries.