Topping:
4 slices sandwich bread, each torn into quarters
2 Tbsp. unsalted butter, softened
1/4 tsp. table salt
1/8 tsp. ground black pepper
3 cups canned fried onions (6 oz, about one can) If the store sells cheddar fried onions then go for it!
1 cup cheddar cheese

Beans and Sauce:
Table salt
2 pounds green beans, ends trimmed, and halved
3 Tbsp. unsalted butter
3 medium garlic cloves, minced or pressed
Ground black pepper
3 Tbsp. all-purpose flour
1.5 cups low-sodium chicken (or vegetable) broth
1.5 cups heavy cream
3 cups cheddar cheese, shredded
2 cups canned fried onions