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In a large skillet or pot, cook the ground beef and diced white onion over medium-high heat. Break up the beef with a spoon as it cooks. Continue cooking until all the pink is gone from the ground beef and the onions are softened.

Carefully drain any excess grease from the pan.

Season the meat mixture with onion powder, garlic powder, beef bouillon powder, salt, and black pepper. Stir well to combine.

Add the tomato paste to the pan and mix it thoroughly with the meat mixture. Allow it to toast up for 1 to 2 minutes, stirring occasionally.

Add the butter to the pan and let it melt into the meat mixture.

Once the butter is melted, sprinkle in the all-purpose flour. Stir constantly for a couple of minutes to cook out the raw flour taste and create a roux.

Pour in the beef broth, stirring continuously to prevent lumps. Bring the mixture to a simmer, and it will begin to thicken into a gravy.

Add the frozen mixed vegetables and the pre-boiled, sliced potatoes to the pan. Stir gently to combine all ingredients.

Stir in the shredded Parmesan cheese until it is well incorporated and slightly melted.

Give the casserole one final mix. Serve hot and enjoy your Cheesy Shepherd's Pie Potato Casserole!


In a large skillet or pot, cook the ground beef and diced white onion over medium-high heat. Break up the beef with a spoon as it cooks. Continue cooking until all the pink is gone from the ground beef and the onions are softened.

Carefully drain any excess grease from the pan.

Season the meat mixture with onion powder, garlic powder, beef bouillon powder, salt, and black pepper. Stir well to combine.

Add the tomato paste to the pan and mix it thoroughly with the meat mixture. Allow it to toast up for 1 to 2 minutes, stirring occasionally.

Add the butter to the pan and let it melt into the meat mixture.

Once the butter is melted, sprinkle in the all-purpose flour. Stir constantly for a couple of minutes to cook out the raw flour taste and create a roux.

Pour in the beef broth, stirring continuously to prevent lumps. Bring the mixture to a simmer, and it will begin to thicken into a gravy.

Add the frozen mixed vegetables and the pre-boiled, sliced potatoes to the pan. Stir gently to combine all ingredients.

Stir in the shredded Parmesan cheese until it is well incorporated and slightly melted.

Give the casserole one final mix. Serve hot and enjoy your Cheesy Shepherd's Pie Potato Casserole!
