1 butternut squash, peeled
1 bunch kale or other greens
1 large onion
3 cloves garlic
3 TBS olive oil
Salt and pepper
2 cups diced tomatoes
1 TBS chopped fresh sage leaves
1 cup grated Gruyere, Swiss, mozzarella or fontina cheese, for topping.
Cut the squash in half lengthwise, then scoop out the seeds. Place the halves face-down and cut in 1/4-inch slices. Remove and discard the stems from 1 bunch kale or other greens. Chop the leaves roughly. Dice 1 large onion and mince 3 cloves of garlic. Sauté the onion in 3 TBS olive oil until soft, then add the garlic and cook another minute. Add the kale and cook for 5 minutes. Season with salt and pepper.
Lightly grease a 13-by-9-inch baking dish or large cast iron skillet, then cover with an overlapping layer of squash slices. Sprinkle with salt and pepper. Spread the cooked greens over the squash, then make another layer of squash. Spoon 2 cups of diced tomatoes and 1 TBS chopped fresh sage leaves over this layer, then make another layer of squash. Top with grated cheese. Bake the casserole at 350 degrees for 45 minutes or until it is brown on top and bubbling.