Veggie Pizza Dip Recipe

Ingredients

• 2 tablespoons unsalted butter
• ½ small onion, chopped
• 4 ounces baby bella mushrooms, sliced
• 8 ounces (2 cups) Mozzarella cheese, shredded and divided
• 8 ounces cream cheese, softened
• ¼ cup Parmesan cheese , grated
• ½ cup Greek yogurt or sour cream
• 1 teaspoon Italian seasoning
• ½ teaspoon garlic powder
• Salt and pepper, to taste
• ¼ cup frozen spinach , thawed, drained and chopped
• ½ cup tomatoes, seeded and diced
• ¼ cup sliced black olives