Cheesy Au Gratin Meatball Casserole Recipe

Healthy For The Soul

Au Gratin Meatball Bake is a classic Midwest comfort casserole. Beef meatballs filled with onion and cheddar are nestled into creamy au gratin potatoes and baked until bubbly and golden. This dish is simple, satisfying, and perfect for a family dinner.

To save time, use a boxed au gratin potato mix. The casserole reheats beautifully, making it an excellent choice for leftovers during a busy week. Serve with your favorite vegetable side for a complete meal.

While not the leanest dish, it’s the kind of meal that comforts—what I like to call “healthy for the soul.” Using lean ground beef helps balance the richness from the cheese. Kids tend to love this one, and it comes together quickly on busy nights.

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Any Cheese You Please

I used a sharp cheddar for this recipe, but feel free to choose any cheese you prefer. Keep in mind fattier cheeses can release some oil while baking. Using lean ground beef helps reduce excess grease.

You might notice some oil on top of the casserole when it first comes out of the oven; as it rests the liquid will be absorbed back into the potatoes. If the oil concerns you, choose a leaner cheese such as low-fat mozzarella or a light grated parmesan in the meatball mixture.

Grate It Yourself

Grating the cheese yourself gives a cleaner melt and better texture in the meatballs and the casserole. Pre-shredded cheeses often contain an anti-caking coating that can interfere with melting. Experiment with different cheeses to find your favorite combination.

Let The Meatballs Rest

Letting the meatballs rest before cooking helps the ingredients bind so they hold together while browning and baking. If you prepare them and let them sit 15–20 minutes on a tray, they will develop a firmer texture and are less likely to fall apart.

When browning, avoid forcing the meatballs to turn. They will release from the pan easily when they have developed a proper sear. If they stick, give them another moment—when ready, they lift without tearing.

Yield: 8 Servings

Au Gratin Meatball Bake

Rich, cheesy meatballs tucked into creamy au gratin potatoes make a comforting casserole that’s easy to prepare. This recipe uses a boxed potato mix for convenience and comes together quickly for weeknight dinners or potlucks.

Ingredients

• 2 lbs lean ground beef (90/10)
• 1 medium yellow onion, minced
• 8 oz cheddar cheese (grated; reserve 1 cup for topping)
• 1 sleeve saltine crackers, finely crushed
• 1 tsp dried dill
• 1 tsp Dijon mustard
• 1 tsp onion powder
• 1 tsp garlic powder
• 1/2 tsp black pepper (or to taste)
• 1/2 tsp salt
• 2 eggs
• 1/4 cup milk
• 1 family-size box Au Gratin potatoes (7.7 oz) plus milk, water and butter per box directions (reduce butter by half)
• 1 tbsp butter for browning meatballs

Instructions

1. In a large bowl, whisk the eggs and milk. Add the ground beef, crushed crackers, minced onion, dried dill, Dijon, onion powder, garlic powder, salt, and pepper. Mix gently—do not overmix.
2. Grate the cheese, reserving one cup for the casserole topping. Fold the remaining cheese into the meat mixture.
3. Form the mixture into roughly 3-inch meatballs. Arrange them on a baking sheet and let them rest for 15–20 minutes to firm up.
4. Melt 1 tablespoon of butter in a skillet over medium heat. Brown the meatballs on all sides, about 3–5 minutes per side, turning when they lift easily from the pan. Work in batches if needed. Transfer browned meatballs to a plate lined with paper towels.
5. Prepare a 9 x 13 baking dish with nonstick spray. Make the au gratin potatoes according to the boxed directions, using the milk and water measurements listed but using only half the recommended butter. Stir the potato mix and seasoning together and pour into the prepared baking dish.
6. Add the browned meatballs to the potato mixture and gently stir to combine. Sprinkle the reserved shredded cheddar evenly over the top.
7. Bake at 375°F (190°C) for 35–45 minutes, or until bubbly and browned. Oven times vary—watch closely the first time you make it.
8. Remove from the oven and let rest loosely covered with foil for several minutes so liquids absorb back into the potatoes. Garnish with dried dill or chives before serving.