Raspberry-Nectarine Parfaits with Warm Peach Sabayon

Name: Raspberry-Nectarine Parfaits with Warm Peach Sabayon
Prep time: 20 minutes
Yield: Makes 4 Servings
Ingredients: 1 pound nectarines (about 4 medium), halved, pitted, thinly sliced; 2 1/2 cups fresh raspberries, divided; 1/2 cup sugar, divided; 4 large egg yolks; 1/3 cup canned peach nectar; 1/4 cup peach liqueur; Pinch of salt; Toasted sliced almonds (optional)