Variations & Tips:
- Veggie Swap: Not into beefy flavors? Feel free to swap the beef broth with more chicken or even veggie broth.
- Cheese Twist: Experiment with different cheeses. A sharp cheddar or a slice of mozzarella can work wonders too.
- Gluten-Free? No problem! Opt for a gluten-free bread option to crisp up and layer in.
- Storing: This casserole can be prepped a day in advance. Just assemble, cover, and store in the fridge until you're ready to bake.
- Busy Bee Tip: If you're pressed for time, go ahead and use caramelized onions from the store – I won’t tell if you don’t!