How to Make It
Preheat oven to 375°.
Heat olive oil in a large skillet over medium-high heat. Add onion; sauté for 3 minutes. Add squash; sauté for 5 minutes. Add apple; cook 6 minutes or until squash and apple are tender. Stir in salt and pepper. Remove from heat, and cool to room temperature. Gently stir in cheese and thyme.
Separate dough into 8 pieces. Roll each portion into a 5-inch circle on a lightly floured surface. Combine mustard and 2 teaspoons water in a small bowl. Lightly brush top sides of dough circles with mustard mixture. Spoon about 2 tablespoons squash mixture onto half of each circle, leaving a 1/4-inch border. Fold dough over filling; press edges together with a fork to seal. Brush milk over dough. Place turnovers 1 inch apart on a baking sheet lightly coated with cooking spray. Bake at 375° for 19 minutes or until golden brown. Serve warm.