Asparagus Soup

Ingredients

• 1 cup chopped onion
• 6 green onions, sliced
• 3 tablespoons butter
• 1-1/2 cups sliced fresh mushrooms
• 1 pound fresh asparagus, trimmed and cut into 1/2-inch pieces
• 1 can (49-1/2 ounces) chicken or vegetable broth
• 1/2 cup chopped fresh parsley
• 1/2 teaspoon salt
• 1/2 teaspoon dried thyme
• 1/4 teaspoon pepper
• 1/8 teaspoon cayenne pepper
• 2 cups cooked wild rice
• 3 tablespoons cornstarch
• 1/3 cup water