Season potatoes with salt and pepper and pan fry in a small amout of olive oil until almost tender. Add a bit of water and cover to steam potatoes. Remove potatoes from pan and keep warm
Add more oil to the pan and cook onion until tender
Add ground beef to the onion and cook over medium-high heat until brown.
Stir in onion powder, garlic powder, oregano, cumin and and black pepper
Add olives and raisins. Stir to distribute
Add tomato sauce and stir. Add addtional seasonings if needed.
Add cooked potatoes back to the pan. Cover and cook for 5-10 minutes.
Serve with white or yellow rice