Chop bacon and add to a cast iron skillet or Dutch oven on medium heat and begin to cook.
While the bacon begins to cook, dice an onion and add it to the cooking bacon.
Open the cans of green beans, drain thoroughly, then add them to a large bowl.
Once done, drain any renderings and add the cooked bacon and softened onions to the bowl of beans.
Stir the cream of mushroom soup until everything is well combined.
Stir in the cheddar cheese, lemon juice, and a quarter of the can of crispy fried onions. Take a taste and add any salt and pepper as needed.
Add the green bean mixture to the Dutch oven or skillet and smooth out, making it as even as possible.
Sprinkle the remaining crispy fried onions over the top.
Cover with foil or a lid and bake for 30 minutes, or until heated through.
Once heated through remove the covering and bake for an additional 5 minutes, allowing the fried onions to become golden brown.
Notes
How to make this recipe using fresh green beans
Wash and trim, cut in half if desired, about a pound of fresh beans. Add them to a large pot of salted boiling water and cook for approximately 7 minutes. You’re after slightly tender green beans not fully cooked green beans. Drain and plunge into an ice bath to stop them from further cooking. Dry completely and use in the recipe as you would the regular green beans in a can.