- To prepare squash: Preheat oven to 400 °F. Coat a baking sheet with cooking spray.
- Season insides of squash with 1/4 teaspoon salt and pepper and arrange cut-side down on the prepared pan. Bake the squash until the flesh is tender but the sides are not collapsing, 20 to 25 minutes total. Reduce oven temperature to 350 °.
- To prepare stuffing: Meanwhile, combine 1 cup water, quinoa and 1/8 teaspoon salt in a small saucepan; bring to a boil over medium heat. Cover, reduce heat to a simmer and cook until the quinoa is tender, about 15 minutes. Remove from heat, fluff with a fork and let stand, covered, for 10 minutes.
- Melt 1 tablespoon butter in a medium skillet over medium heat. Add leek and the remaining 2 tablespoons water. Season with thyme, nutmeg and the remaining 1/4 teaspoon salt. Cover, reduce heat to low and cook, stirring occasionally, until the leek is tender but not brown, 8 to 10 minutes. Stir in raisins during the last 2 minutes.
- Stir the quinoa, hazelnuts and parsley into the leek mixture. Spoon the quinoa mixture into the squash halves, firmly packing as need. Cut the remaining 1 tablespoon butter into slivers and distribute evenly over the tops.
- Bake the squash until the stuffing is heated through, about 15 minutes.
**Easy cleanup: Recipes that require cooking spray can leave behind a sticky residue that can be hard to clean. To save time and keep your baking sheet looking fresh, line it with a layer of foil before you apply the cooking spray.
Recipe Source: Eating Well