Butternut squash, a yellow to tan colored winter squash, is free of fat, cholesterol and sodium. It's also a source of fiber, magnesium, potassium and vitamins A and C. One half cup of uncooked cubes has 2 grams of fiber, 1 gram of protein and only 50 calories. Cubed squash is available at grocers or cut your own after peeling the squash. The sweet-flavored squash is a suitable substitute for any recipe calling for pumpkin or eat it a variety of ways plain, including mashed.
Place the cubes in a microwave-safe bowl.
Add about 1/4 to 1/2 cup of water to the bowl, or just enough to come up about 1 inch on the bowl.
Cover the bowl with plastic wrap to seal the moisture in and steam the cubes.
Microwave the bowl of cubes on high for about 5 to 10 minutes, or until the cubes are fork tender. Stir the cubes halfway though the cooking time.