📖 Instructions

1. **Preheat Your Oven and Prepare Sweet Potatoes:** Adjust your oven rack to the middle position. Preheat your oven to 400°F (200°C). Thoroughly scrub and wash the sweet potatoes under cold running water. Pat them dry with a clean kitchen towel. Using a fork, prick each sweet potato several times all over. This helps steam escape during baking.
2. **Roast the Sweet Potatoes:** Place the pricked sweet potatoes directly on the oven rack or on a baking sheet lined with parchment paper (for easier cleanup). Roast for 45-60 minutes, or until they are very tender when pierced with a fork. The exact time depends on their size. You want them soft enough to easily scoop out the flesh. Remove from the oven and let them cool slightly until they're comfortable enough to handle.
3. **Prepare the Sweet Potato Base:** Once cooled, carefully cut each sweet potato in half lengthwise. Scoop out the soft, cooked flesh into a large mixing bowl, discarding the skins. Add the unsalted butter, light brown sugar, ground cinnamon, ground nutmeg, salt, and heavy cream to the bowl with the sweet potato flesh. Use a potato masher, a large fork, or a stand mixer with the paddle attachment to mash the ingredients together until smooth and creamy. Taste and adjust seasonings if necessary—you might want a pinch more salt or a little extra cinnamon. Don't worry about being too perfect; a few small lumps are totally fine and add character!
4. **Transfer to Baking Dish:** Lightly grease a 9x13 inch (or similarly sized) baking dish with a bit of butter or cooking spray. Spoon the mashed sweet potato mixture evenly into the prepared dish. Smooth the top with the back of a spoon or a spatula.
5. **Add Marshmallow Topping:** Evenly arrange the miniature marshmallows over the sweet potato mixture. Make sure they cover the entire surface, or at least most of it. Don't be shy with those fluffy clouds!
6. **Bake and Toast Marshmallows:** Place the baking dish back into the preheated oven. Bake for about 15-20 minutes, or until the sweet potato mixture is heated through and the marshmallows are puffed up and lightly golden brown. Keep a close eye on the marshmallows, as they can burn quickly. If they start to brown too fast, you can cover the dish loosely with aluminum foil.
7. **Broil (Optional for Extra Toasted Marshmallows):** For a deeper golden brown and slightly crispier marshmallow topping, you can briefly broil. Watch this step *very* carefully! Turn your oven to broil (low or high, depending on your oven). Place the dish on an upper rack, about 6-8 inches from the broiler element. Broil for 1-3 minutes, rotating the dish if necessary, until the marshmallows are beautifully toasted to your liking. Do not walk away, they can go from perfect to burnt in seconds!
8. **Cool and Serve:** Remove the Toasted Marshmallow Sweet Potato Bake from the oven. Let it cool for 5-10 minutes before serving. This allows the dish to set slightly and prevents you from burning your mouth on the molten marshmallow. Serve warm and enjoy the delicious combination of sweet and creamy!