Mix the lemon juice, olive oil and garlic together in a small baking dish. Stir in the capers and basil. Add the halibut fillets and let marinade for an hour. When ready, bake in a 400 degree oven for 10 minutes.
In a sauce pot, add the olive oil. Add the onion and saute until soft and translucent. Add the spinach in batches and let down fully. Add the rice, water and butter. Bring to a boil. Cover and turn the heat down to a simmer. Cook for 20 minutes or until the water is absorbed. Season with salt, pepper and a squeeze of lemon.
Put it on your plate and eat it!