1
Preheat the oven to 400°F. In a large skillet, heat olive oil over medium-high heat. Add ground beef and cook until browned. Stir in the diced onion, garlic, celery, and green bell pepper.
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2
Top with the beef and vegetables, then sprinkle 2 cups of shredded cheddar cheese. Add remaining hash browns loosely on top and sprinkle on salt and pepper.
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3
Bake uncovered for 45 minutes. Sprinkle remaining cheese on the dish and return to the oven for another 15 minutes until melted.
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