Want to be extra fancy? Add cooked bacon crumbles on top. It’s like hiring a tiny, salty party band for your casserole.
If you’re using fresh green beans, blanch them in boiling water for 3 minutes first, then shock them in ice water. It keeps them crunchy. Nobody likes a soggy bean, not even your grandma.
This dish is a make-ahead superstar. Assemble it the night before, but hold the fried onions until baking. Your future self will high-five you.
