1. 1. Preheat the oven to 350°F (175°C).

2. 2. Cook white rice according to package instructions.

3. 3. In a large skillet, cook ground beef and ground turkey until browned. Drain excess fat.

4. 4. Add tomato sauce, chicken broth, and beef broth to the skillet. Season with salt and pepper. Simmer for 10 minutes.

5. 5. Stir in shredded Monterey Jack cheese until melted.

6. 6. In a separate saucepan, melt unsalted butter. Whisk in whole milk and flour to make a roux. Cook until thickened.

7. 7. Pour the cheese mixture over the meat mixture in the skillet. Stir to combine.

8. 8. Transfer the mixture to a casserole dish. Top with more shredded Monterey Jack cheese.

9. 9. Bake in the preheated oven for 20 minutes, or until bubbly and golden brown.

10. 10. Serve the casserole with white rice, green beans, and biscuits on the side.