I used the Hormel and equivalent shelf stable "meals" as a component in my "Ready Meal" kits.
Zippered 1 gallon bag with a couple of those meals, some packaged tuna/chicken/Spam pouches, Gatorade Drink Mix pouches, trail mix, granola bars, Oatmeal, crackers, and a few other bits to make around a 2500 calorie day ration, trying hard to rely on foods that do not require (or require minimal) cooking or preparation.
Not as small or convenient as true MRE's, but I can tailor them to my tastes. Nothing worse than being stuck eating stuff you don't like in an emergency...
I have a small cook kit (store flat twig stove, small Stainless pot/cup) that I keep in my BOB/GHB that can be used to heat the components (dump in the cup, heat on stove, eat from cup) in under 10 minutes if I have the time/resource.