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Step 01: Brown the ground beef
In a large skillet, cook the ground beef over medium heat until browned and fully cooked. Drain any excess fat.
Add the chopped onion and minced garlic to the skillet with the beef and sauté for 3-4 minutes until the onion becomes soft and fragrant.
Season with salt, pepper, and thyme (if using).
Step 02: Prepare the casserole filling
To the beef mixture, add the frozen peas and carrots (or your favorite mixed vegetables), cream of mushroom soup, sour cream, and beef broth. Stir everything together and let it simmer for about 5-7 minutes until the mixture is well combined and slightly thickened.
Step 03: Assemble the casserole
Preheat your oven to 350°F (175°C).
In a greased 9x13-inch baking dish, spread the beef and vegetable mixture evenly across the bottom.
Spoon the prepared mashed potatoes over the beef mixture, spreading them evenly across the top to create a smooth layer.
Step 04: Add the cheese topping
Sprinkle the shredded cheddar cheese evenly over the top of the mashed potato layer.
Step 05: Bake the casserole
Place the casserole in the preheated oven and bake for 25-30 minutes, or until the cheese is melted, bubbly, and golden brown on top.
Step 06: Garnish and serve
Remove the casserole from the oven and let it cool for a few minutes. Garnish with fresh parsley, if desired, to add a pop of color and flavor.
Slice and serve warm, enjoying the rich, comforting flavors of this classic dish.
Tips and Conclusion
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