- Preheat oven to 350. 
- Place the potatoes on a baking sheet and drizzle with olive oil, salt and pepper. Bake for about an hour until tender. 
- Meanwhile, add the beef and onion to a pan and cook for about 10 minutes to brown. 
- Add in the garlic and cook 1 minute. Add in the tomato paste and cook 2 minutes, stirring often. 
- Add in the remaining ingredients and stir to combine. Cover and cook, stirring occasionally, until the potatoes are ready. 
- Slice the potatoes in half and place the bottom halves on each plate. Top with a large scoop of the sloppy joe mixture, then place the top half of the tomato on top. Serve.