To a large pot on the stove, add in the olive oil over medium heat. Once the oil is hot add in the mixed vegetables, cook them for 3-4 minutes now add in the bullion cubes, pinto beans, water, uncooked rice, and seasonings stir well. Cover with a lid and let simmer for 20 minutes, stirring occasionally until the rice is tender.
Once the rice is tender stir in the spinach and let the spinach wilt down for one-two minutes then you can serve.