Preheat the oven to 350 degrees F (175 degrees C). Line a baking sheet with parchment paper and drizzle with olive oil.
Remove stamens from blossoms, wash, and dry well.
Combine ricotta, egg, Parmesan cheese, nutmeg, mint, salt, and pepper in a bowl; mix well. Carefully stuff about 1 tablespoon ricotta mixture into each pumpkin blossom and pinch the ends closed. Place on the prepared baking sheet.
Bake in the preheated oven until browned, about 20 minutes.
