Heat the olive oil in a large skillet over medium heat.
Add the chopped onion, green bell pepper, and garlic. Cook for 5–7 minutes until softened.
Add the ground beef and cook until browned, breaking it into small crumbles as it cooks.
Drain any excess grease if needed.
Stir in the tomato sauce, olives, raisins, capers, cumin, sazon seasoning, sugar, and salt.
Mix well until everything is evenly combined.
Cover the skillet and reduce the heat to low.
Simmer the Classic Cuban Picadillo Recipe for 5–10 minutes so the flavors blend together.
Taste and adjust seasoning before serving.
Serve hot with white rice, fried plantains, mashed potatoes, or warm crusty bread.