Use a wide, shallow bowl rather than a deep one. It helps the casserole cook more evenly. Nobody wants a cold center and boiling edges. That’s just bad vibes.
If you want to get fancy, add a pinch of garlic powder or a dash of Worcestershire sauce to the soup mix. It adds a little “oomph” that makes people ask, “Wait, is this store-bought?” You just wink and say nothing.