Pasta with Spinach and Mushrooms

Ingredients

• 6 ounces bow-tie pasta
• 1 tablespoon margarine or butter
• 1 medium onion, chopped
• 1 cup sliced portobello or other fresh mushrooms (such as chanterelles, shiitakes, and/or crimini)
• 2 cloves garlic, minced
• 4 cups thinly sliced fresh spinach or 2 cups thinly sliced sorrel and 2 cups thinly sliced spinach
• 1 teaspoon snipped fresh thyme
• 1/8 teaspoon pepper
• 1 tablespoon licorice-flavored liqueur (optional)
• 2 tablespoons shredded Parmesan cheese