Butternut Squash without pesto apples

3 1/2 pounds butternut squash peeled and cut in 1/4-inch-thick slices (about 6 cups) 1 bunch spinach fresh, washed and stemmed, optional 2 tablespoons butter,[...]

2 1/2 tablespoons olive oil 1 each yellow onion chopped 2 cloves garlic peeled and minced 1 teaspoon cumin ground 6 cups butternut squash peeled and cut into[...]