Cheesy Shaved Beef Stuffed Baked Potatoes with Caramelized Onions

Fluffy baked potatoes loaded with tender caramelized onions, seasoned shaved roast beef, and melted sharp cheddar cheese. The sweet, golden onions complement the savory beef perfectly, while the cheese creates a bubbly, irresistible topping. Finished with cool sour cream and fresh chives, these hearty stuffed potatoes make an excellent dinner or satisfying lunch. Perfect for using leftover roast beef or transforming simple ingredients into comfort food that feels special.
Ingredients
- 4 large baking potatoes, scrubbed
- 1 tablespoon extra virgin olive oil
- ½ teaspoon sugar
- 1 very large yellow onion (or 2 big medium sized), rough chopped
- 6 tablespoon butter, unsalted
- 1 cup shaved, cooked roast beef, firmly packedturkey or ham1:1
Works well with other deli meats
- 1 teaspoon worcestershire
- 1 cups sharp cheddar, coarsely shredded
- 1 teaspoon ground black pepper
- 1 teaspoon coarse salt
- 2 teaspoon chives, minced
- 4 tablespoon sour cream
Instructions
- 1
Bake the potatoes in the oven until tender
- 2
Heat oil and butter in a medium pot over medium-low heat
- 3
Add onions and stir to combine with the melted butter
- 4
After 4 minutes, sprinkle with sugar and stir
- 5
Cook onions for 30-40 minutes until very soft and caramelized
- 6
Remove potatoes from oven and let cool for 5 minutes on baking sheet
- 7
Position oven rack for broiling and set broiler to high
- 8
Cut lengthwise across each potato top, leaving 1/2 inch on both sides
- 9
Pinch sides of potatoes and push toward center to open
- 10
Squeeze to push fluffy insides up
- 11
Remove a few tablespoons of potato flesh with a spoon
- 12
Season potato cavities with salt and pepper
- 13
Place butter inside each potato
- 14
Add roast beef and Worcestershire to the pot with caramelized onions
- 15
Gently stir to combine beef mixture
- 16
Divide beef and onion mixture among potatoes, mounding slightly
- 17
Top each potato with heaping mounds of cheese
- 18
Broil for 1-2 minutes until cheese melts
- 19
Remove from oven and plate
- 20
Garnish with sour cream and chives
Tips
Save the scooped potato flesh and mix with butter and sour cream for a quick snack while cooking.
Caramelized onions can be made ahead and refrigerated for up to 3 days.
Use deli roast beef if you don't have leftover cooked roast beef - just slice it very thin.
Good to Know
Refrigerate leftovers for up to 3 days. Reheat in oven at 350F until warmed through.
Potatoes can be baked and stuffed up to filling stage, then refrigerated overnight. Add cheese and broil when ready to serve.
Serve immediately while cheese is hot and melted. Provide extra sour cream and chives on the side.
Common Mistakes
Don't rush the onion caramelization - low heat and patience create the best flavor.
Watch carefully during broiling to avoid burning the cheese.
Substitutions
Dairy-Free Swaps
General Alternatives
Works well with other deli meats
FAQ
Can I make these ahead of time?
Yes, prepare through the stuffing stage and refrigerate overnight. Add cheese and broil when ready to serve for best results.
What if I don't have roast beef?
Substitute with thinly sliced deli roast beef, turkey, or ham. You can also use leftover pot roast or any cooked beef.
How long do leftovers keep?
Refrigerate for up to 3 days. Reheat in the oven at 350F until heated through, about 15-20 minutes.