This Garlic Parmesan Chicken & Steak Bake with Cheesy Loaded Mashed Potatoes is a hearty, comforting meal that brings together tender proteins and rich, creamy sides. Perfect for family dinners or special occasions, this dish balances bold garlic-Parmesan flavor with classic loaded mashed potatoes for a satisfying, crowd-pleasing plate.
Why You’ll Love This Recipe
Two proteins, one dish – Chicken and steak baked together for variety
Bold, savory flavors – Garlic, Parmesan, and herbs elevate simple ingredients
Comfort food classic – Creamy, cheesy mashed potatoes with bacon
Great for meal prep or gatherings – Easy to scale up or down
Restaurant-style at home – Looks impressive but is simple to make
Ingredient Breakdown
For the Garlic Parmesan Chicken & Steak Bake
Chicken breasts – Lean, tender, and absorb flavors well
Ribeye or sirloin steaks – Ribeye adds richness; sirloin keeps it leaner
Olive oil – Helps the seasoning stick and keeps meat juicy
Parmesan cheese – Adds nutty, salty depth
Garlic – Fresh minced garlic delivers bold flavor
Oregano & paprika – Provide warmth and subtle earthiness
Salt & pepper – Essential for balance
Fresh parsley – Brightens the dish and adds color
For the Cheesy Loaded Mashed Potatoes
Russet potatoes – Ideal for fluffy, creamy mash
Whole milk – Adds smoothness and richness
Butter – Enhances flavor and texture
Cheddar cheese – Sharp and melty for classic “loaded” taste
Sour cream – Adds tang and creaminess
Bacon – Smoky, salty crunch
Green onions – Fresh bite that balances richness
Salt & pepper – Season to taste
Step-by-Step Preparation Method
- Prepare the Oven
Preheat your oven to 400°F (200°C) to ensure even cooking and a golden finish.
- Make the Garlic Parmesan Marinade
In a small bowl, mix olive oil, Parmesan cheese, minced garlic, oregano, paprika, salt, and pepper. This mixture acts as both a marinade and a flavor crust.
- Season the Meat
Place chicken breasts and steaks in a baking dish. Brush generously on both sides with the garlic Parmesan mixture.
- Bake the Chicken and Steak
Bake for 20–25 minutes, flipping halfway through:
Chicken: Cook until internal temperature reaches 165°F
Steak:
Medium-rare: 135°F
Medium: 145°F
Let the meat rest for 5 minutes before serving to keep it juicy.
Making the Cheesy Loaded Mashed Potatoes
- Boil diced potatoes in salted water for 15–20 minutes, until fork-tender.
- Drain and return potatoes to the pot.
- Add milk, butter, cheddar cheese, sour cream, salt, and pepper.
- Mash until smooth and creamy, adding milk as needed.
- Fold in bacon and green onions. Taste and adjust seasoning.
Serving Suggestions
Serve chicken and steak side-by-side with a generous scoop of mashed potatoes
Garnish with fresh parsley and extra Parmesan
Pair with roasted vegetables, green beans, or a simple salad
Add garlic bread for an extra indulgent meal
Helpful Tips for Best Results
Use a meat thermometer to avoid overcooking
Let meat rest before slicing to lock in juices
Warm the milk and butter before adding to potatoes for extra creaminess
Grate your own cheese for better melting and flavor
Season in layers to enhance overall taste
Variations & Substitutions
Swap steak for pork chops or salmon
Use Greek yogurt instead of sour cream for a lighter option
Try mozzarella or Monterey Jack in the mashed potatoes
Add roasted garlic to the potatoes for deeper flavor
Make it spicy with red pepper flakes or cayenne
Storage & Reheating
Refrigerator: Store leftovers in airtight containers for up to 3 days
Reheat:
Oven: 325°F until warmed through
Microwave: Use short intervals and cover to retain moisture
Add a splash of milk when reheating potatoes to restore creaminess
Frequently Asked Questions (FAQ)
Can I make this ahead of time?
Yes. You can prep the seasoning and mash the potatoes ahead. Reheat before serving.
What’s the best steak cut for baking?
Ribeye for richness or sirloin for a leaner option both work well.
Can I cook everything in one pan?
Yes, as long as the pan is large enough and meats aren’t overcrowded.
Is this recipe freezer-friendly?
The chicken and potatoes freeze well, but steak texture is best fresh.
Nutrition Overview (Approximate per Serving)
Calories: 520 kcal
Protein: High
Carbohydrates: Moderate
Fats: Moderate to high (from cheese, butter, and steak)
Final Thoughts
This Garlic Parmesan Chicken & Steak Bake with Cheesy Loaded Mashed Potatoes is the ultimate comfort meal—rich, flavorful, and satisfying without being complicated. Whether you’re cooking for family or treating yourself to a restaurant-style dinner at home, this recipe delivers every time.