Hearty Vegetarian Chili

Ingredients

• 1-3/4 cups chopped baby portobello mushrooms
• 1 medium onion, finely chopped
• 1/2 cup chopped sun-dried tomatoes (not packed in oil)
• 2 tablespoons olive oil
• 2 garlic cloves, minced
• 1 package (12 ounces) frozen vegetarian meat crumbles
• 2 cans (16 ounces each) chili beans, undrained
• 2 cans (14-1/2 ounces each) no-salt-added diced tomatoes
• 1/2 cup water
• 1/2 cup vegetable broth
• 4-1/2 teaspoons chili powder
• 2 teaspoons brown sugar
• 1/2 teaspoon celery salt
• 1/2 teaspoon ground cumin
• 1 medium ripe avocado, peeled and finely chopped
• Reduced-fat sour cream, optional