1/4 cup Bartenura Olive Oil

1 large onion

1 large head of garlic, peeled and chopped

3/4 cup fresh basil, tightly packed

1 tablespoon flour

3 (24-ounce) bags frozen butternut squash

3 sweet potatoes, peeled and cubed

1 and 1/2 tablespoons salt, or to taste

2 tablespoons sugar

1 teaspoon black pepper

pinch nutmeg

pinch cinnamon