Place all of the ingredients in a large freezer bag.
Squish gently to mix.
Remove excess air, seal, and freeze.
Place the bag in the fridge overnight to thaw.
Cook on the stovetop with a bit of oil in a large skillet or wok over medium heat until hot throughout and onions and peppers have softened - about 15 minutes.
Alternatively, you can bake the rice in the oven at 350°F for 1 hour, covered.