Prep: Preheat the oven to 400°F and lightly grease a 9x13 baking dish with avocado oil or another healthy fat.
Mix: In a large bowl, whisk the mayonnaise, Greek yogurt, garlic powder, onion powder, dried parsley, chives, dill and salt together until smooth.
Cut: Pat chicken breasts dry with a paper towel. Cube the chicken into ½" pieces. Peel the potatoes and cube them into small pieces, similar in size to the chicken.
Toss: Add the chicken, potatoes, and broccoli to the bowl with the creamy dressing and toss to combine until everything is evenly coated.
Bake: Transfer the mixture to the prepared baking dish and tuck in the broccoli florets evenly across the pan. Sprinkle with cheese and bake uncovered in a preheated oven for 30 minutes or until the chicken is cooked through.
Rest: Remove the casserole from the oven and allow to rest for 5-10 minutes for the juices to settle. Garnish with thinly sliced green onions.
Notes
Storage: Store leftover casserole in an airtight container in the refrigerator for up to 4 days. To reheat, transfer a small individual-serving amount to a covered skillet and reheat on the stovetop over medium-low heat. If it seems a little dry, add a splash of cream, water, or chicken feet bone broth to soften it up a bit.Helpful Tips:
Cut into uniform sizes - Cube the chicken, potatoes, and broccoli into uniform sizes to ensure even cooking throughout the casserole.
Mind the cooking time - Keep in mind the potatoes will take longer to cook through than the chicken and other ingredients, so cut theminto smaller pieces to avoid overcooking the casserole, as that will dry out the chicken.
Add broccoli last - I like to add the broccoli florets on top of the casserole but if you want to combine them into the whole mixture, gently fold them in to avoid crushing them.
Rest sufficiently - Allow the casserole to rest for a few minutes after removing it from the oven. This allows the juices to settle and the flavors to meld together. It will also make it easier to serve without falling apart.
The information shown above is an estimate provided for your convenience by an online calculator. It should not be considered as a substitute for a professional nutritionist's advice. Please see our complete Nutritional Information Disclaimer.