Chunks of tender butternut squash provide the beta-carotene in this hearty fall entree of whole-wheat pasta and beet greens.
Bring a saucepan of water to a boil. Add pasta; cook until al dente, according to package directions. Drain; set aside, covered with plastic wrap.
Heat butter in a large skillet over medium-low heat. Add onion, and cook until translucent, about 10 minutes. Add squash, and cook until slightly softened, about 10 minutes. Add mushrooms, and cook until tender, about 5 minutes. Add sherry, and cook until liquid evaporates. Add stock, and cook until vegetables are tender and stock is reduced by half, 15 to 20 minutes. Stir in greens, and cook until wilted, about 3 minutes. Add pasta, salt, and pepper, and toss to combine. Serve topped with cheese.
Roast leftover beets to serve along with the pasta. Peel and cut into thin wedges, drizzle with a tablespoon of olive oil, and season with a pinch of salt and pepper. Roast in a 400-degree oven until tender, about 30 minutes.