Ground Beef Cottage Pie is a hearty and comforting dish featuring a savory ground beef filling mixed with vegetables like carrots and peas, all simmered in a flavorful gravy. This delicious mixture is topped with creamy mashed potatoes and cheese, then baked until golden brown and bubbly. Perfect for a cozy family meal, this classic recipe delivers warmth and satisfaction in every bite.
Add the potatoes to a pot with enough water to cover. Bring to boil and cook for 15-20 minutes until fork tender. Drain and place back in the hot pot. Alternately, you can add the potatoes to an Instant Pot with 1/2 cup of chicken broth. Seal the pot and set to cook on manual for 12 minutes. When done, do a quick release. No need to drain.
Pour in the milk, butter, salt, and garlic powder into the potatoes. Mash until potatoes are light and fluffy. Set aside.
Preheat oven to 400 degrees F. In at least a 10" skillet, brown ground beef until no longer pink. Do NOT drain off fat.
Sprinkle the onion soup mix and flour over the beef. Stir until the soup mix and flour are absorbed into the ground beef and fragrant. Gradually whisk in the beef broth, and simmer until thickened.
Add in the frozen vegetables and cook until heated through.
If your skillet is oven safe, you can cook the pie in there. If not, transfer the beef mixture to dish to a 9 x 9 inch baking dish. Carefully top the ground beef mixture with the mashed potatoes and spread out into an even layer. Sprinkle with the shredded cheese. Bake at 400 degrees for 15 to 18 minutes, until bubbly.