Salisbury Steak Bake

Step 1 -Preheat the oven to 400 degrees F.

Step 2 -Grease a 9x13-inch baking dish.

Step 3 -In a large saucepan over medium-high heat, add the ground beef.

Step 4 -Cook the beef until no pink remains, about 5-7 minutes.

Step 5 -Add the mushrooms and the onions to the ground meat in the pan and cook until the onions are translucent, about 5 minutes.

Step 6 -Drain the fat from the pan.

Step 7 -Add the gravy mix and the cream of mushroom soup to the pan, stirring until all of the meat is coated.

Step 8 -Spread the mixture evenly into the prepared baking pan.

Step 9 -Into a large saucepan, add the water and the butter.

Step 10 -Bring the butter mixture to a boil on the stove-top.

Step 11 -Once the butter mixture is boiling, immediately transfer the saucepan from the heat and gently stir in the milk and the mashed potato mix.

Step 12 -Leave the mashed potato mixture to sit for 1 minute.

Step 13 -Stir the potatoes and spread them on top of the meat mixture in the baking dish.

Step 14 -Bake until the potatoes start to brown around the edges, about 15-20 minutes.

Step 15 -Let the casserole rest for at least 5 minutes.

Step 16 -Slice and serve.