Make dinner indulgent with this Chicken Potato Broccoli Casserole - a wholesome layering of golden potatoes, vibrant broccoli, and creamy cheesy chicken sauce. Perfect for a cozy family dinner, it's a hearty and delicious comfort dish that will have everyone coming back for seconds!
Preheat your oven to 375°F and line two baking sheets with parchment paper. Start boiling a pot of water to blanch the broccoli.
Brown Potatoes: Make sure your potatoes are very thinly sliced and lay them out on the two baking sheets. Be sure to not overlap them, but they can touch slightly since they will shrink while baking. Season with salt and pepper. Bake for 20 minutes, switching the sheets halfway to ensure both pans cook evenly and all the potatoes are lightly golden. Set aside until ready to assemble.
Blanch Broccoli: Once the water is boiling, prep another large bowl on the side with ice and cold water. Carefully drop the broccoli florets into the pot of boiling water for 2-3 minutes until bright green. Then scoop them out carefully with a slotted spoon and immediately put them in the ice water to stop the cooking process. Set aside until ready to assemble.
Chicken Mixture: Mix shredded chicken, Greek yogurt, mayonnaise, minced garlic, dried thyme, half of the cheddar cheese, half of the mozzarella cheese, half of the Parmesan cheese, salt, and pepper in a bowl until combined. Set aside until ready to assemble.
In a greased 9x13 baking dish, layer half of the browned potatoes. Top with half of the blanched broccoli. Scoop half of the chicken mixture over the layers and gently spread trying not to disturb the broccoli and potatoes.
Repeat the layers with the remaining ingredients (potatoes, broccoli, chicken mixture). Then sprinkle the remaining cheddar, mozzarella, and parmesan cheese on top.
Cover the baking dish with foil and bake at 375° for 25-30 minutes. Then, uncover and bake for an additional 10-15 minutes or until the cheese is melted and bubbly, and the casserole is heated through.
Remove from the oven and let it rest for a few minutes before serving.