Preheat oven to 375 degrees. Clean and cut green beans into 1 1/2 inch pieces. In pot of salted boiling water, place green beans in. Boil green beans for 5 minutes and drain hot water. Immediately pour green beans into an ice bath - a large bowl of cold water and ice. This will stop the cooking process of the green beans, let sit for about 4-5 minutes and drain the ice water leaving only green beans left in the bowl

Pour in cream of mushroom soup, milk, cheddar jack cheese and pepper to taste. Stir everything together until incorporated and pour the green bean mixture into a casserole dish. Smooth the green bean mixture out until it’s even and top with a layer of onion rings. Bake in the oven for 20 minutes. Remove casserole from oven and layer on crispy fried onion pieces. Bake for another 5 - 10 minutes or until onion rings and onion pieces are golden brown