Salt and pepper the beef. In a large pot or pan, heat the oil over medium-high heat.
Sear the meat in batches on all sides until golden brown. Remove the seared meat and set aside.
Maafe is the heart of the cuisine in Mali, Senegal, and Gambia. Its preparation requires patience, as slow simmering is key to the full flavour integration of peanut butter, tomatoes, and spices.
When choosing peanut butter, opt for unsweetened and unsalted, creamy butter. Maafe is usually served with white rice, but couscous or Fufu are also excellent choices.
Salt and pepper the beef. In a large pot or pan, heat the oil over medium-high heat.
Sear the meat in batches on all sides until golden brown. Remove the seared meat and set aside.
Add the onion to the same pot and sauté for about 5 minutes until softened. Add the garlic and tomato paste and cook for 2 minutes until the paste starts to darken.
Return the meat to the pot. Add the crushed tomatoes, broth, bay leaf, salt, pepper, and chili (if using).
Bring to a boil, then reduce the heat to low, cover, and simmer for 60 minutes.
After one hour, add the peanut butter, sweet potatoes, and carrots to the stew.
Mix well until the peanut butter is completely dissolved and incorporated into the sauce. If the sauce seems too thick, add a little more broth or water.
Cover and simmer for another 30 minutes until the sweet potatoes and carrots are soft and the meat is very tender. The sauce should be creamy and thick.
Serve hot, poured over a mound of cooked white rice (or couscous).