Add rice, water, and olive oil to a pot. Season with salt, pepper, and adobo. Mix everything together. Cover the pot and bring to a simmer. Once simmering, immediately turn off the heat and let it sit covered on the stove for 30 minutes.
While the rice is cooking, make the meatballs. In a large bowl, combine ground beef, chopped onion, diced red bell pepper, grated carrot, Parmesan cheese, egg, salt, pepper, and garlic powder. Mix everything together well with clean hands.
Shape the mixture into meatballs.
Pour marinara sauce into a skillet. Place the meatballs on top of the sauce. Drizzle the olive oil over the top.
For the full step-by-step instructions and video tutorial, download the Little Lunches app.