Creamy Chicken-Vegetable Casserole - VeryVera

Ingredients

• 2 c sliced fresh mushrooms
• 3/4 c chopped red or yellow sweet pepper, or combination
• 1/2 c chopped onion
• 2 cloves garlic, minced
• 2 tbsp. butter
• 1/4 c all-purpose flour
• 1 tsp. salt
• 1/2 tsp. dried thyme or marjoram, crushed
• 1/2 tsp. black pepper
• 2 c milk
• 1 (10 ounce) package frozen chopped spinach, thawed and well drained
• 2 c cooked brown or white rice
• 12 oz diced chicken breast
• 1/2 c finely shredded Parmesan cheese