Start to finish: 40 minutes
2 tablespoons lemon juice
1 tablespoon sugar
1/4 teaspoon salt
6 firm, ripe peaches, peeled, halved, and pitted
1/3 cup water
1/4 cup honey
1 tablespoon unsalted butter
1/4 cup hazelnuts, toasted, skinned, and chopped coarse
Adjust oven rack 6 inches from broiler element and heat broiler. Combine lemon juice, sugar, and salt in large bowl. Add peaches and toss to combine, making sure to coat all sides with sugar mixture.
Transfer peaches, cut side up, to 12-inch oven-safe skillet. Pour any remaining sugar mixture into peach cavities. Pour water around peaches in skillet. Broil until peaches are just beginning to brown, 11 to 15 minutes.
Combine honey and butter in bowl and microwave until melted, about 30 seconds, then stir to combine. Remove peaches from oven (skillet handle will be hot) and brush half of honey mixture over peaches. Return peaches to oven and continue to broil until spotty brown, 5 to 7 minutes.
Remove skillet from oven (skillet handle will be hot), brush peaches with remaining honey mixture, and transfer peaches to serving dish, leaving juices behind. Being careful of hot skillet handle, bring accumulated juices in skillet to simmer over medium heat and cook until syrupy, about 1 minute. Pour syrup over peaches. Sprinkle with hazelnuts and serve.
Nutrition information per serving: 154 calories; 47 calories from fat; 5 g fat (1 g saturated; 0 g trans fats); 5 mg cholesterol; 98 mg sodium; 28 g carbohydrate; 3 g fiber; 25 g sugar; 2 g protein.