Thinking about a young Dean making breakfast and packing lunch for his younger brother every morning before school.
There isn't enough money and he's running out of ways to keep Sammy in the dark about their situation but he'll be dammed if he shows weakness. He spends the last of their savings on frozen waffles and fills his stomach with the joy on his brother's face. He's not in school half as much as he needs to be, but he's grateful for the supply of free meals and the momentary distraction from their lives.
Years later when he's able to afford the supplies to make Sam a proper breakfast every day, he finds himself full of unknown emotions and his heart hurts.
Cas and Jack don't need to eat yet they've made a habit of having breakfast with them. Dean gets to make his angel all of his favourite foods and ensure that their kid never knows what's it like to go hungry.
He packs them lunches and picnic baskets whenever they go on hunts, goes all out on family dinner and keeps their fridge stocked to survive another apocalypse or three.
Sam eats everything he cooks without much complaint. He knows more than he lets on and while they've avoided the topic for years now, his brother understands.
In time, so does Cas and Jack. They notice the way he shops and his obsession with making sure everyone has enough food to eat. Then there's his panic when food goes to waste and the anxiety which claws at his chest whenever his loved ones aren't eating as they should.
Dean understands hunger. And lives his life with the fear of not being able to provide for his family. The feeling of helpless fades over the years but he can't help his worrying. It's second nature to him, afterall.