Best Tuna Noodle Casserole without cream

Ingredients

• olive oil
• onion
• celery
• parmesan
• mozzarella
• thyme
• tomato paste
• ground beef
• chicken breast
• potatoes
• apple cider vinegar
• scallions

Instructions

1. Preheat the oven to 400°F (200°C).
2. Warm butter in a Dutch oven; sauté the onion and garlic until soft.
3. Stir in flour and cook for 1 minute to form a light roux.
4. Whisk in milk gradually; simmer until slightly thickened.
5. Add the main ingredients and seasonings; cook until tender.
6. Transfer to a baking dish; top with cheese and bake until golden and bubbling.
7. Rest 5 minutes, then serve hot.