Pour 1/2 bag of the frozen peas into a small bowl and set them aside.
Add 2 tbsp of olive oil to a skillet on medium-high heat.
Add 1/2 bag of the hash browns in a single layer.
Liberally salt and pepper the potatoes.
Cook without touching for 5 minutes.
Stir and cook without touching for another 5 minutes. They should be brown and crispy. Scoop the cooked hash browns into a bowl and set them aside.
In the same skillet, add 1 tbsp of olive oil and the diced onions, turn the heat down to medium and cook for 3-4 minutes. ough to touch, add the remaining cheese. Taste and add salt and pepper if needed.
Add the ground beef and cook until it is browned. If there is a lot of liquid in the skillet, pour off 1/2 of it.
Mix together the Worcestershire sauce, garlic powder, tomato paste, and salt and pepper, and pour the mixture over the ground beef and onions.
Stir the cooked hash browns back into the skillet.
Add 1/2 bag of peas.
Remove the skillet from the heat and stir in 1/2 of the shredded cheese.
Let the meat mixture cool at room temperature for 15-20 minutes.
When the mixture is cool enough to touch, add the remaining cheese.
Taste and add salt and pepper if needed.