Chipotle Mushroom and Cheese Quesadillas - Better Than Bouillon

Ingredients

• .25 cup unsalted butter, divided
• 1 lb sliced brown mushrooms
• 1 tbsp Better Than Bouillon
• 1 tbsp finely chopped fresh thyme
• 2 cloves garlic, minced
• 4 cups packed baby spinach
• 2 cups shredded mozzarella cheese
• 4 large flour tortillas (10 inches)
• 1 avocado, halved, pitted, peeled and mashed
• .5 cup sour cream
• 2 tbsp lime juice