Winter Squash and Cauliflower Soup with Rosemary and Marsala

(recipe from The Vegan Gourmet by Susann Geiskopf-Hadler & Mindy Toomay)

1 1/2 lbs. winter squash, peeled, seeded, and diced (4 cups)
1 Tbsp. olive oil
1 medium yellow onion, diced
1/4 tsp. dried red chili flakes
5 cloves garlic, minced
2 tsp. dried rosemary, crushed
1/8 tsp. salt
4 cups vegetable stock
1 28-oz. can diced tomatoes
2 cups diced cauliflower
3/4 cup dried small shell pasta
1/3 cup Marsala

Heat the olive oil in a stockpot over medium-high heat for a moment, then add the onion and chili flakes.  Stir and sauté about 2 minutes, then stir in the squash, garlic, rosemary, and salt.  Saute about 7 minutes, stirring frequently, until the squash and onions are beginning to brown.  Add the stock and the tomatoes with their juice.  Cover and bring to a boil over high heat.  Stir in the cauliflower, pasta, and Marsala, and bring back to a boil over high heat.  Reduce heat to medium-high to maintain a strong simmer and cook about 12 minutes, until cauliflower is fork-tender and pasta is al dente.  Serve very hot.