Ruth Chris Broccoli Au Gratin Recipe: Cheesy Steakhouse Side with Crispy Topping

This steakhouse classic brings crispy topping and creamy comfort to your home kitchen. I developed this version after years of testing to match that signature Ruth’s Chris richness without the restaurant price tag.

The secret lies in the layering: tender broccoli, a velvety cheese sauce, and a buttery breadcrumb crust that bakes to golden perfection. It’s the kind of side that turns a simple meal into something special.

What emerges from the oven is a bubbling, golden dish with that unmistakable crispy texture on top. The cheese sauce clings to every floret, creating a decadent experience that pairs perfectly with steak or chicken.

Perfect for holidays or Sunday dinners when you want to impress. Here’s how to make it right every time.

Ingredients for Ruth Chris Broccoli Au Gratin

Rich creamy sauces and fresh broccoli meet a buttery crispy topping right here.

The cheese blend is everything. Sharp cheddar and Gruyère give that signature Ruth’s Chris depth—skip the pre-shredded bags (they have anti-caking agents that ruin the melt). Whole Foods or Trader Joe’s have great blocks. For the broccoli, look for vibrant green crowns with tight florets. The milk needs to be whole for that velvety sauce texture (trust me on the full-fat version).

No Gruyère? Fontina or Monterey Jack work well. Fresh out of Dijon? Regular mustard at half the amount plus a pinch of turmeric for color. The Worcestershire must be vegetarian—Annie’s makes a good version. Panko is non-negotiable for that crispy texture, but crushed saltines in a pinch. The nutmeg might seem small, but it adds that restaurant-quality warmth you can’t place.

Assemble and refrigerate up to 24 hours before baking (add 5-10 minutes to cook time). Leftovers keep 3-4 days in the fridge. Reheat in the oven to maintain that crispy topping—microwave turns it soggy (don’t skip this part).

Step-by-Step Instructions for Broccoli Au Gratin

Master this restaurant-worthy side with a creamy cheese sauce and crispy breadcrumb topping.

Step 1: Blanch the Broccoli for Optimal Texture

Bring a large pot of salted water to a boil. While waiting, cut the 2 lb fresh broccoli crowns into uniform, bite-sized florets. When the water reaches a rolling boil, add the broccoli and cook for exactly 2 minutes.

This brief blanch softens the broccoli just enough to absorb the cheese sauce while maintaining a slight bite. Immediately drain and transfer to an ice bath to stop the cooking process. Drain again and pat thoroughly dry—residual moisture will dilute your sauce. Spread the florets in a 9×13-inch baking dish in an even layer.

Step 2: Craft the Velvety Cheese Sauce

In a heavy saucepan over medium heat, melt 0.5 cup unsalted butter. When foaming subsides, whisk in the 0.25 cup all-purpose flour to form a smooth roux. Cook for 1-2 minutes until the mixture turns a light golden color and smells nutty.

Gradually whisk in the 2 cups whole milk until smooth. Add the minced 3 cloves garlic cloves, 1 tbsp Dijon mustard, 1 tsp Worcestershire sauce, 1 tsp salt, 0.5 tsp black pepper, and 0.25 tsp nutmeg. Cook, stirring constantly, for 3-4 minutes until the sauce thickens enough to coat the back of a spoon.

Reduce heat to low and stir in the 8 oz sharp cheddar cheese and 4 oz Gruyère cheese until fully melted and smooth. Taste and adjust seasoning if needed—this sauce should be rich and tangy with a hint of warmth from the nutmeg.

Step 3: Assemble and Add the Crispy Topping

Pour the cheese sauce evenly over the blanched broccoli in the baking dish. Use a spatula to gently toss the florets, ensuring each piece is well coated. The sauce should be thick enough to cling to the broccoli without pooling excessively at the bottom.

In a small bowl, combine the 1 cup panko breadcrumbs with the remaining 0.5 cup Parmesan cheese. Sprinkle this mixture evenly over the top, pressing down lightly to help it adhere. This topping will transform into a golden, crispy crust during baking.

Step 4: Bake to Perfection

Preheat your oven to 375°F. Bake the dish on the middle rack for 20-25 minutes until the top is golden brown and the sauce is bubbling at the edges. For an extra crispy finish, broil for 1-2 minutes at the end, watching closely to prevent burning.

Let it rest for 5 minutes before serving. The sauce will thicken slightly as it cools, making it easier to serve neat portions. Each bite should deliver tender broccoli enrobed in creamy cheese sauce with a satisfying crunch from the topping.

Dietary Considerations for These Flavors

Gluten-Free Adaptation

Swap the all-purpose flour for 1:1 gluten-free flour blend like King Arthur. The roux works the same, just whisk vigorously to prevent lumps. I’ve tested this in my tiny Boston kitchen with great results. 💪

Dairy-Free Version

Use olive oil instead of butter and unsweetened almond milk for the sauce base. For cheese, Miyoko’s liquid mozzarella melts beautifully. Top with gluten-free panko for crunch.

Lower-Calorie Option

Reduce the cheese to 6 oz total (mix cheddar and Gruyère) and use 2% milk. Skip the butter in the topping—just Parmesan and panko with a spray of olive oil for crispiness.

Vegetarian Note

Ensure your Worcestershire sauce is vegetarian—Annie’s brand works perfectly. The rest of this dish is naturally meat-free, making it a hearty side for any plant-based meal.

Nut-Free Consideration

Check your panko label—some brands process in facilities with nuts. Kikkoman panko is a safe bet. Also verify cheese labels for potential cross-contamination if allergies are severe.

Make It Lighter

Replace half the cheese with low-fat cottage cheese blended smooth. You’ll still get creaminess with fewer calories. I do this when I’m craving comfort without the guilt. ✨

Frequently Asked Questions