the goods:
2 and 1/2 cups all-purpose flour
1 teaspoon salt
1 cup (2 sticks) cold unsalted butter, cut into 1/2-inch pieces
1 large egg, beaten
apple butter
sugar
In a food processor, pulse flour and salt to combine. Add butter and pulse until mixture resembles coarse meal, with a few pea-size pieces of butter remaining. Sprinkle with 3 tablespoons ice water. Pulse until dough is crumbly but holds together when squeezed (add up to 3 tablespoons more ice water to achieve desired texture). Do not overmix. Form dough into a 1-inch-thick disk, wrap tightly in plastic, and refrigerate until firm, at least 1 hour.
Transfer pops to a parchment-lined baking sheet. Brush tops with egg and sprinkle with sugar. Freeze on sheet 15 minutes. Bake until golden brown, 25 minutes, rotating sheet halfway through. Let cool on sheet before serving.