Brown the Butter & Toast the Herbs: In a small saucepan, melt the butter over medium heat. Once it begins to foam, stir in the thyme, rosemary, sage, and nutmeg. Continue cooking, swirling occasionally, until the butter turns golden brown and smells nutty, about 3–5 minutes. Immediately pour into a heatproof bowl to cool slightly.
1/2 cup (1 stick; 113 g) unsalted butter, 1 teaspoon dried thyme, 1 teaspoon dried rosemary, 1/2 teaspoon dried sage, 1/4 teaspoon ground nutmeg
Preheat, Prepare, & Mix Wet Ingredients: Preheat the oven to 375°F (190°C). Line a 12-cup muffin pan with paper liners or grease well. To the bowl with the brown butter, whisk in the pumpkin puree, egg, milk, sugar, salt, garlic powder, onion powder, and black pepper until smooth.
1 (15-ounce) can pumpkin puree (about 1 ¾ cups), 1 large egg,, 1/2 cup (120 ml) whole milk, 1 Tablespoon granulated sugar, 3/4 teaspoon Morton kosher salt*, 1 teaspoon granulated garlic, 1 teaspoon onion powder, freshly cracked black pepper
Add Dry Ingredients & Combine: Add the flour and baking powder on top of the wet mixture. Using a fork, gently whisk just the flour and baking powder together on top before folding the dry into the wet with a spatula. Add the parmesan. Mix until just combined—do not overmix.
2 cups (240 g) all-purpose flour, 1 Tablespoon baking powder, 1 cup (3 ounces) freshly grated Parmesan cheese, plus more for topping
Fill the Pan: Divide the batter evenly among the 12 muffin cups. Sprinkle each with a little extra Parmesan and, if desired, a pinch of flaky salt for crunch.
optional: flaky sea salt,
Bake & Cool: Bake for 21–24 minutes, or until a toothpick inserted in the center comes out clean. Let cool in the pan for 5 minutes, then transfer to a wire rack.