Chicken Pot Tater Tot Casserole

Ingredients

• 4 Tbsp butter
• 8 oz mushrooms, sliced
• 1 cup celery, chopped
• 5 Tbsp all-purpose flour
• 1/2 tsp dried thyme
• 1 Tbsp salt-free all-purpose seasoning
• 1 tsp garlic powder
• 2 cups whole milk
• 1 1/2 cups chicken broth
• 2 1/4 cups cooked shredded chicken (or leftover turkey)
• 1 (12 oz) bag pearl onions, defrosted
• 1 (12 oz) bag crinkle cut carrots, defrosted
• 1 cup peas, defrosted
• 1 1/2 cups shredded cheddar cheese
• 1 1/2 bag frozen tater tots