Instructions:

1. Prepare the Beef: In a large skillet, brown the ground beef over medium heat until no pink remains. Drain excess fat and return to the pan. Add the chopped onion and minced garlic, cooking until the onions are translucent. Stir in the frozen peas and carrots, tomato paste, beef broth, Worcestershire sauce, thyme, salt, and pepper. Simmer for 5-10 minutes until the mixture thickens slightly. Set aside.
2. Cook and Mash Potatoes: Boil the quartered potatoes in salted water until tender, about 15-20 minutes. Drain and return to the pot. Add milk and butter, then mash until smooth and creamy. Season with salt and pepper.
3. Layer the Casserole: Preheat the oven to 375°F (190°C). In a 9×13 inch baking dish, spread the beef mixture evenly. Top with the mashed potatoes, smoothing the top.
4. Bake: Sprinkle the shredded cheddar cheese over the mashed potatoes. Bake in the preheated oven for 20-25 minutes, or until the cheese is melted and bubbly.
5. Serve: Allow the casserole to cool slightly before serving. This dish is best enjoyed warm from the oven.

Nutritional Analysis and Health Benefits:

• Calories: Each serving contains approximately 350-400 calories.
• Protein: High protein content from lean ground beef, which is essential for muscle repair and growth.
• Carbohydrates: Potatoes provide a good source of carbohydrates, which are necessary for energy.
• Fats: Contains moderate amounts of fat from beef and cheese, contributing to the taste and texture of the dish.
• Vitamins and Minerals: Potatoes are a good source of vitamin C and potassium, while peas and carrots provide vitamin A, which is important for vision and immune function.

Health Impact:

• Muscle Maintenance: The high protein content supports muscle maintenance and growth.
• Bone Health: Calcium from the cheese and potassium from the potatoes contribute to bone health.
• Heart Health: Using lean ground beef and controlling the amount of added salt helps make this dish more heart-healthy.
• Energy Levels: The balanced mix of protein, fats, and carbohydrates ensures sustained energy release, making it ideal for an energizing meal.

This Layered Beef and Mashed Potato Casserole is a classic comfort food that combines simple ingredients to create a hearty, satisfying dish perfect for chilly evenings. It’s a family-friendly meal that delivers both nutrition and flavor, making it a great addition to any weekly meal plan.