Preheat your oven to 350°F (175°C). Yes, the oven still exists, I promise.

In a mixing bowl, whisk together the cream of mushroom soup and milk until smooth. It should look like a cozy blanket for your beans.

Stir in the green beans, half the cheddar, and a pinch of salt and pepper. Mix until evenly coated—no clumps of flavor left behind.

Pour the mixture into a baking dish. Smooth the top so it bakes evenly and you don’t have a lumpy surprise.

Bake for 25 minutes. Remove, sprinkle the remaining cheddar, and top with crispy onions.

Return to oven for 5–7 minutes, until the cheese is melted and the onions are golden brown. Pull it out and let it rest a minute.