1 lemon, halved lengthwise, thinly sliced, seeds removed
1 tablespoon thinly sliced fresh sage leaves
½ teaspoon sugar
2 tablespoons olive oil, divided
1 tablespoon pomegranate molasses
½ teaspoon ground allspice
Kosher salt and freshly ground black pepper
1½ pound mixed small tomatoes, such as Sun Gold, cherry, or heirloom, halved
½ small red onion, thinly sliced
¼ cup fresh flat-leaf parsley leaves with tender stems
¼ cup fresh mint leaves, torn if large
¼ cup purple sprouts or microgreens (optional)

Preheat oven to 325°. Cook lemon slices in a medium saucepan of boiling water 2 minutes to remove bitterness. Drain and pat dry. Gently toss lemon slices with sage, sugar, and 1 Tbsp. oil in a medium bowl. Spread out on a parchment-lined baking sheet and bake until lemons are no longer wet and only slightly colored, 15–20 minutes. Let cool. Whisk pomegranate molasses, allspice, and remaining 1 T. oil in a large bowl; season with salt and pepper. Add lemons, tomatoes, onion, parsley, mint, and sprouts, if using, and toss gently; season with salt and pepper.