Ingredients

1 small butternut squash, halved lengthwise and seeded 

1 tablespoon unsalted butter, melted 

Coarse salt 

1 sweet potato 

Pinch of cinnamon (optional) 

Preparation

Preheat oven to 350 degrees. Using a pastry brush, lightly coat cut-side of squash with butter; season with salt. Transfer to a roasting pan filled with 1/4-inch water, skin-side down. Cover with parchment paper-lined foil; bake until squash is tender, about 1 hour.

Meanwhile, prick potato all over using a fork; place on a parchment-paper-lined baking sheet. Roast until tender, about 1 hour.

When cool enough to handle, scoop out flesh from both squash and potato; transfer to blender. Add cinnamon, if desired; puree until smooth.

Allow to cool before serving. Use immediately, or freeze in airtight containers for up to 3 months.