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Easy Shepherd's Pie Casserole

A comforting and easy-to-make casserole combining ground beef, vegetables, and creamy mashed potatoes, perfect for busy weeknights or gatherings.
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Dinner, Main Course
Cuisine American
Servings 6 servings
Calories 450 kcal

Ingredients
  

For the beef mixture

  • 1 pound ground beef Use lean ground beef for a healthier option.
  • 1 medium onion, chopped
  • 2 cloves garlic, minced
  • 1 cup frozen mixed vegetables (peas, carrots, corn) Fresh vegetables can be used if preferred.
  • 2 tablespoons tomato paste
  • 1 cup beef broth Choose gluten-free broth if needed.
  • 1 teaspoon Worcestershire sauce Opt for gluten-free if necessary.
  • Salt and pepper to taste

For the topping

  • 3 cups mashed potatoes (prepared from about 3 large potatoes) Leftover mashed potatoes can be used for convenience.
  • 2 tablespoons butter Dot on top for added flavor.
  • 1/4 cup shredded cheddar cheese (optional) Add for extra taste if desired.

Instructions
 

Preparation

  • Preheat oven to 400°F (200°C).
  • In a large skillet, cook ground beef over medium heat until browned; drain excess fat.
  • Add chopped onion and minced garlic to the skillet; cook until softened, about 3-4 minutes.
  • Stir in frozen mixed vegetables, tomato paste, beef broth, Worcestershire sauce, salt, and pepper.
  • Simmer the mixture for 5-7 minutes until slightly thickened.
  • Transfer the beef mixture to a casserole dish, spreading evenly.

Assembly and Baking

  • Top with prepared mashed potatoes, spreading to cover the filling completely.
  • Dot the mashed potatoes with butter and sprinkle with shredded cheddar cheese if using.
  • Bake in the preheated oven for 20-30 minutes until the top is golden and bubbly.
  • Let cool for 5 minutes before serving.

Notes

Serve hot with a simple green salad or crusty bread. To store leftovers, cool completely, and cover. Refrigerate for 3-4 days or freeze for longer storage. Reheat at 350°F (175°C) until heated through. Broil for a crispy top if desired.
Keyword Casserole, Comfort Food, Easy Dinner, Ground Beef, Shepherd's Pie