Heat the olive oil and butter in a medium saucepan over medium heat. Add the onions and garlic and cook for about 3 minutes or until translucent.
Add the rice and stir for a minute to coat with the onions and garlic. Add the ground cumin, sazon Goya, salt, pepper and chicken stock. Bring to a boil, reduce the heat to low, add the green beans, carrots and peas. Stir and cook for about 20 to 25 minutes.
Serve with powdered beef (Carne molida) and bananas on the side.