Cook the Minute Rice cups according to package directions.
Add 1 tablespoon vinegar to a 2 ½ quart pot with 3 or 4 inches of water in it and bring to a boil.
Crack an egg in a small bowl and gently slide it into the boiling water. Cook for 5-7 minutes.
Once the eggs have cooked, transfer them onto a paper towel-lined plate.
Cut the avocado and lemon into quarters.
In a meal prep container, add the Minute Rice, black beans, diced onion with olive oil drizzled on top and salt and pepper. Put the lid on and shake to mix.
Next, add in the avocado slices, lemon, spinach, and poached eggs to the meal prep containers. Seal them up and store in the refrigerator until it's time to eat.