Step 1

Preheat oven to 350°. Toast pecans on a rimmed baking sheet, stirring once, until slightly darkened in color and fragrant, 10–12 minutes. Let cool.

Step 2

Meanwhile, bring honey, 2 Tbsp. sugar, and 3 Tbsp. water to a simmer in a small saucepan over medium-high heat, swirling occasionally until sugar is dissolved. Add rosemary and lavender and remove from heat. Let sit 5 minutes. Remove rosemary and let syrup cool.

Step 3

Bring a pinch of salt, remaining ¼ cup sugar, and 1 Tbsp. water to a boil in another small saucepan, stirring to dissolve sugar. Cook (without stirring) until sugar turns a light amber color, about 2 minutes. Add pecans and cook, stirring constantly, until nuts are coated and caramel is a dark amber color, about 2 minutes. Immediately scrape out onto a parchment-lined baking sheet and spread out into a single layer; let cool. Break into smaller pieces.

Step 4

Toss nectarines, peaches, lemon zest, and ¼ cup syrup in a large bowl to coat. Let sit 5 minutes. Gently toss in half of Gorgonzola and half of candied pecans; taste and season with salt if needed. Transfer to a platter. Top with remaining Gorgonzola and candied pecans.

Step 5

Do Ahead: Syrup can be made 1 month ahead; cover and chill. Pecans can be candied 1 day ahead; store airtight at room temperature.