Blanch the broccolini in a large pot of boiling salted water for 2 minutes. Drain and rinse with cold water in a colander.
Return the pot to the stovetop and warm olive oil over low heat. Add onions and sauté for 5 minutes or until translucent. Add garlic and stir for 1 – 2 minutes. Return broccolini to the pot and stir until heated through. Add greens and sauté until tender. Season with unrefined salt.
Garnish with fresh lemon juice and sunflower seeds before serving.