Step 1

Preheat the oven to 350 degrees F. Spray a 1-quart casserole dish with cooking spray and set aside.

Step 2

In a large pot of boiling water, add green beans and cook for 3 minutes, until bright green. Drain, then place in an ice bath to cool. Transfer to a large bowl and set aside.

Step 3

Meanwhile, in a saucepan set over medium heat, whisk together the soup, milk, Worcestershire sauce, garlic powder, and pepper. Bring the mixture to a simmer, then whisk in 1 cup of the cheese until completely incorporated. Pour over the green beans and toss to coat, then transfer to a casserole dish.

Step 4

Top with remaining cheese, then bake for 20 minutes, until warmed through and bubbling around the edges.

Step 5

Top the casserole with fried onions and the crisp bacon and bake for an additional 5 minutes.