Apple and Nut-Butter Puff Pastry Tarts

Name: Apple and Nut-Butter Puff Pastry Tarts
Cuisine: European, American
Ingredients: 1 sheet frozen puff pasty, thawed; All-purpose flour (for surface); 4 tablespoons peanut or other nut butter; 4 tablespoons apple butter; 1 pound firm baking apples (about 2 large), peeled, cored, sliced into 1/2-inch wedges; 1/4 cup chopped salted, roasted peanuts or other nut; 2 tablespoons unsalted butter, cut into pieces; Sugar (for sprinkling); 1 large egg