Simmer the apple cider in a small saucepan for 15-20 minutes, until reduced to about ¾ cup. Let cool to room temperature.
Preheat the oven to 400°F. Grease or line a muffin pan with liners for 16 muffins.
In a large bowl, whisk together the cooled apple cider, melted butter, granulated sugar, brown sugar, buttermilk, and vanilla. Whisk in the eggs.
Add the flour, baking powder, cinnamon, salt, and nutmeg. Stir until just combined.
Divide the batter evenly into muffin cups, filling each about ⅔ full (about 3 tablespoons per cup).
Sprinkle 1-2 teaspoons of Sugar In The Raw over each muffin.
Bake for 14-16 minutes, or until a toothpick inserted in the center comes out clean.
Notes
🥡 STORAGE: Store muffins in an airtight container at room temperature for 3-4 days.Keep away from direct sunlight and moisture to prevent sogginess.♨️ REHEATING: Microwave: Warm for 10-15 seconds.Oven: Reheat at 300°F for 5-7 minutes.Air fryer: Reheat at 300°F for 2-3 minutes.❄️ FREEZING: Freeze muffins in a freezer-safe bag or container for up to 2 months.Thaw at room temperature or warm in the oven before serving.💡 TIPS FOR BEST RESULTS: Reduce apple cider ahead of time to save prep time on baking day.Use fresh, refrigerated apple cider for the best flavor.For crunchier tops, stick with turbinado sugar. For softer muffins, use white or brown sugar.🍳 ALTERNATE COOKING METHODS: Oven: Best method for even texture.Air fryer: Bake at 325°F for 10-12 minutes in batches.♻️ LEFTOVERS: Leftover muffins can be crumbled into yogurt or parfaits.Use as a base for a fall-inspired bread pudding.