Chicken Florentine Casserole is a wonderfully creamy, cheesy one dish casserole with a buttery bread crumb topping.

 
This mix and bake casserole can be prepared in just about 10 minutes and then it needs just 30 minutes to bake in the oven. Even though there is spinach in it, this is a kid-friendly casserole. They will love how creamy it is and the spinach blends right in and is hardly noticeable.
A combination of mayonnaise and sour cream plus a can of condensed mushroom soup creates an ultra creamy base for this casserole.
What To Serve With Chicken Florentine Casserole"
This casserole tastes great served over white rice. It’s a really rich recipe so I like to serve it with either a green salad or steamed broccoli.

Recipe Tips:
A rotisserie chicken can be substituted for the chicken breasts for convenience.
If you don’t like mushroom soup, try using condensed cream of chicken or cream of celery soup.
To make this dish spicy, add 1/2 teaspoon of crushed red pepper flakes.
I like to add 1 teaspoon of curry powder for flavor, but you can leave it out if you don’t like curry powder. Try using 1 teaspoon of dried basil instead.
If you have just a little left over, try mixing it in with some pasta to stretch it and voila! You have a second meal. It also makes a great topping for baked potatoes.

Can This Casserole Be Frozen"
Yes, it can be frozen for up to 3 months before or after baking. I prefer doing it before baking. When ready to  cook...