Peel and dice the potatoes. Boil them with salt until fork tender for about 20 minutes. Lightly mashed them and set aside.
Season meat with salt and pepper. Add enough oil to coat a skillet 2-3 tablespoons) and cook the meat.
Cooking time will depend on how thick your meat is, I like to use as thermometer and cook until meat reaches 130F.
In a food processor, add the meat cut into strips and process until the meat resembles ground beef texture.
In the same skillet you cooked the meat add the onion and bell pepper cook until translucent for about 3-4 minutes.
Add the garlic and cook one minute until fragrant for about 1 minute.
Add the tomatoes, cumin, paprika and dijon mustard. Cook for about 5 minutes until the sauce is reduced.
Add the beef back to the skillet and combine with the sauce. Add the mashed potatoes and mix until fully combined. Taste for salt and pepper and add as needed.
Allow the filling to cool down for about 10-15 minutes.