1-2tablespoonsWater, broth, balsamic vinegar, or wineoptional
Coarse kosher salt and freshly ground black pepper
Twice Baked Sweet Potatoes
4large sweet potatoes
3tablespoonsbutter
6ouncesGruyere cheeseshredded
Coarse kosher salt and freshly ground black pepper
Instructions
Caramelized Onions
Heat butter in a large cast iron or stainless steel skillet over medium heat. Once melted, add the onions and stir to coat.
Turn the heat down to medium low. Allow the onions to cook, just barely sizzling and stirring every 5 or 10 minutes, until very soft and golden brown, about 1 hour. If they start to dry out you can add a bit more butter.
When the onions are dark enough you may want to deglaze the pan with a little water, broth, balsamic vinegar, or wine. Stir the liquid into the onions, allowing all the browned bits from the bottom of the pan to be picked up and absorbed into the mixture. Season with salt and pepper to taste.
Twice Baked Sweet Potatoes
Preheat the oven to 400ºF.
While the onions are cooking, rinse the sweet potatoes and prick the skin with a fork a few times to allow steam to escape as they cook. Wrap each potato tightly in aluminum foil and place on a baking sheet in the preheated oven until soft and easily pierced with a fork, about an hour.
Preheat the broiler to high and set an oven rack in the highest position.
Allow the sweet potatoes to cool enough so you can handle them. Cut each potato in half and fluff up the inside carefully with a fork, then mash a little butter, salt, and pepper into each half.
Distribute caramelized onions amongst the potatoes, then top with shredded Gruyere.
Place sweet potato halves on a baking sheet and broil a few minutes, watching closely, until the cheese is melted and just beginning to brown.
Notes
Tips for customizing twice baked sweet potatoes
For vegan twice baked sweet potatoes, omit the cheese (or use a vegan version) and use avocado or olive oil to make vegan caramelized onions https://lettucevegout.com/recipes/vegan-caramelized-onions/
Make the caramelized onions oil free https://minimalistbaker.com/easy-caramelized-onions-oil-free/
Skip the extra butter in the cooked sweet potatoes and instead mash in a couple teaspoons of sour cream in each
Swap the gruyere for a regular swiss or cheddar and top with minced chives