This is a quick, nutritious, easily customizable recipe for a weekday meal, made of pantry staples and stuff. 

Instructions:

1.) Prepare your base, aka your rice or grain of choice, have it ready in your bowl.

2.) In a mixing bowl, add drained canned tuna.

3.) Mash the tuna if necessary into tiny pieces.

4.) Add your chopped onions, miso, mayo, mix!!!

5.) Taste test, add salt/pepper as desired.

6.) Transfer the tuna mix on top of your rice. 

7.) Garnish your donburi with sliced green onions, furikake, kimchi or other toppings!

8.) Eat :) ! Best enjoyed with tea or a sparkling drink over ice!