French Onion Chicken Casserole

If you are like me, sometimes you need a quick fix on a weeknight. This French Onion Chicken Casserole is simple and fast.

 

Why You’ll Love This Dinner

If you’re looking for a great recipe that encompasses the flavors of classic french onion soup, look no further than this french onion chicken casserole.

• Classic comfort food – This time of year I crave warm comfort food and nothing says comfort more than a bowl of French Onion Soup, but on busy weeknights, I just don’t have the time.
• Time saving swaps – To save on time, I used store-bought rotisserie chicken and caramelized onions I had frozen the month before blended with sour cream, beef bullion, mayonnaise, and cream.
• Cheesy and delicious – To top off my French Onion Chicken Casserole, I used traditional Swiss cheese slices and buttery biscuits. All the ingredients in one bite make a blissful and satisfying one-dish meal with little cleanup.

Ingredients

The ingredients need to make this cheesy french onion chicken casserole are simple and easy to find at your local grocery store.

• Chicken – You want this to be shredded or cubed. My favorite way to save time is to use a store bought rotisserie chicken. However you can cook some juicy chicken breasts in a large skillet yourself too.
• Mayonnaise – Although creamy, mayonnaise is really just oil and egg. So on top of adding a little flavor, it also helps to bind everything together.
• Sour cream – This adds to the creaminess and substance to the casserole. You could also use plain greek yogurt instead.
• Heavy cream – This helps to thin everything out while also keeping this creamy chicken casserole just that, creamy.
• Beef bouillon granules – To achieve granules, simply grind them with a mortar and pestle or the back of a spoon.
• Salt and pepper – I always prefer to use fine sea salt and freshly ground pepper when cooking.
• Rubbed sage – If you don’t have sage on hand, feel free to sub rosemary or thyme instead.
• Caramelized onions – Yes, there is a difference between sautéed onions and caramelized onions. Click over to find out the difference!
• French cut green beans – I suppose you could use regular green beans for this french onion chicken bake, but in sticking with the french theme, this is what I used.
• Swiss cheese – I prefer Swiss cheese as it gets all melty and delicious, but see the variations selection below for other cheese options.
• Grands biscuits – Simple ingredients is what makes this one of my favorite recipes. And ready made biscuit cut into quarters is an easy way to simplify this meal.

Variations

There are plenty of ways for you to make this french onion chicken casserole recipe your own. Here are a few ideas.

• Cream of chicken soup – A lot of delicious casserole recipes use a can of cream of chicken soup as the base. While it won’t be as creamy, you can certainly use that in place of the sour cream.
• Cheese – Instead of Swiss, try adding your favorite cheese instead. Some great options would be parmesan cheese, mozzarella cheese, gruyere cheese, cheddar cheese or even provolone cheese. The glorious melted cheese might be my favorite part!
• Veggies – If you don’t have a picky eater in the family and would like to add more veggies, yellow onions, broccoli or even those delicious crispy fried onions would be a great addition to this easy french onion chicken casserole.
• Noodles – Add some noodles to this easy dinner recipe. Egg noodles would be delicious and something the whole family could enjoy.

How to Make French Onion Chicken Casserole

The best part about this easy chicken casserole is so easy to make- the ultimate comfort food!

1. Prepare oven and baking dish. Coat a casserole dish with cooking spray and preheat oven.
2. Combine filling ingredients. In a large mixing bowl, combine chicken through rubbed sage. Mix well.
3. Add green beans and onions. Fold in French cut greens beans and caramelized onions. Spread mixture evenly into your dish.
4. Bake. Bake for an initial 30 minutes to warm the filling.
5. Add cheese and biscuits. Remove and layer Swiss cheese over hot chicken mixture. Evenly distribute Grands biscuits quarters and return to oven for 10 minutes, or until tops are lightly browned.
6. Serve. Remove from oven, serve onto plates and top with fresh chopped parsley.

What to Serve with French Onion Casserole

This casserole is great with just about any side dish, but we love it with some veggies or crusty bread since it doesn’t have a ton in it. Here are our favorites.

Storage and Freezing

How to Store

This casserole makes great leftovers! You can store this french onion chicken casserole in an airtight container in the refrigerator for up to five days.

Can I Freeze French Onion Chicken Casserole?

And if you have leftovers and need to freeze them, check out my tips for how to freeze a casserole!

More Easy Weeknight Dinners

We love easy dinner recipes and casserole recipes, so here are a few more.