While rice is cooking, saute the vegetables. Add the olive oil to a medium-sized non-stick skillet, along with the chopped broccolini. Cook covered over medium-high heat, stirring occasionally, until broccolini has softened, about 5 to 7 minutes. Add the garlic and green onion, and continue cooking until fragrant, about 3 minutes. Add the baby spinach, cover the skillet, and cook until spinach has wilted, about two minutes. Add sea salt to taste.