Culver's Pork Tenderloin Sandwich Recipe: Celery Crown Crunch Over Savory Onion Gravy

This Culver's pork tenderloin sandwich recipe delivers the tender, juicy perfection you crave between two buttery buns. 🌟 I've perfected the technique for achieving that signature restaurant texture at home—where the pork melts in your mouth while maintaining just enough structure to hold up to the celery crown crunch and savory onion gravy.

The secret lies in proper seasoning and precise cooking—starting with a dry brine overnight to lock in moisture, followed by a high-heat sear that builds flavor without drying out the meat.

We'll roast it to 145°F internal temperature, then slice it thinly for that signature sandwich texture that makes every bite irresistible.

What you'll end up with is a sandwich that captures all the elements of the original: tender pork slices layered with crisp celery crowns, smothered in rich onion gravy, and sandwiched between soft, buttery buns.

The contrast of textures and flavors makes this more than just a sandwich—it becomes a complete meal experience.

This recipe works equally well for weeknight dinners or game day gatherings. The pork can be prepared ahead and reheated gently, making it perfect for meal prepping. Let's recreate that iconic Culver's flavor at home!

Ingredients for culver's pork tenderloin sandwich

Fourteen ingredients, one iconic sandwich experience—where tender pork meets crisp celery crowns and savory gravy.

The pork tenderloin is non-negotiable for this recipe. Center-cut is key—it's leaner and more tender, which translates to that signature melt-in-your-mouth texture. Grab one from the butcher counter if possible, as pre-packaged cuts can vary wildly in quality. Trim any visible fat before brining, and pat it completely dry before seasoning. The Diamond Crystal kosher salt is my go-to for brining—it dissolves perfectly and doesn't clump. For the celery crowns, look for fresh, crisp stalks with no blemishes, as they'll be the star of the sandwich's crunch.

No chicken broth? Vegetable broth works just as well, though it'll have a slightly different depth. Worcestershire sauce giving you pause? Anchovy-free versions are widely available now, or you can skip it entirely—the gravy will still be rich. For the gravy, the flour-to-broth ratio is critical: whisk in the flour quickly to avoid lumps, and let it cook until it's fully dissolved before adding the milk. The sour cream adds that signature tang, but Greek yogurt in a pinch gives a similar texture. If your buns are stale, brush them lightly with melted butter before assembling to restore that soft, buttery texture.

The pork keeps beautifully in the fridge for 3 days if wrapped tightly in plastic, but it's even better the next day as the flavors meld. The gravy reheats wonderfully—just warm it gently on the stove, stirring constantly to prevent clumping. For meal prep, slice the pork and store it separately from the gravy, then assemble sandwiches fresh. The celery crowns stay crisp for 2 days if stored in a sealed container with a paper towel to absorb moisture. Freeze the pork for up to 3 months if you're prepping for a big game day—just thaw it overnight in the fridge before cooking.

Step-by-step instructions for Culver's pork tenderloin sandwich

Here's how to recreate that iconic tender pork, crispy celery crown, and velvety onion gravy at home.

Preheat your oven to 425°F. Pat the 1.5 lb pork tenderloin dry with paper towels and season generously with 1.5 tsp kosher salt and 0.5 tsp freshly ground black pepper, pressing the seasoning into the meat. Let it sit at room temperature for 15 minutes—this ensures even cooking.

Heat a large oven-safe skillet over medium-high heat and add 0.5 cup unsalted butter, letting it melt and foam. Place the pork in the skillet and sear for 3 minutes per side until golden brown. The butter will bubble vigorously—this creates that signature caramelized crust we want. Transfer the skillet to the preheated oven and roast for 15-20 minutes until the internal temperature reaches 145°F.

While the pork roasts, thinly slice the 4 whole celery stalks into ¼-inch thick rounds using a sharp knife. You'll need about 1 cup of slices for the crowns. Toss them with 2 cloves minced garlic and 1 tbsp Worcestershire sauce in a small bowl.

Heat a separate skillet over medium heat with 1 tablespoon olive oil (not in the ingredients list but essential for crisping). Add the celery mixture and cook for 4-5 minutes until tender but still holding its shape. Remove from heat and set aside—these will crisp up when assembled on the sandwich.

In the same skillet used for the pork (no need to clean it—the fond adds flavor), add 1 whole yellow onion sliced into ¼-inch strips. Cook over medium heat for 8-10 minutes until softened and golden. Sprinkle in 1 tbsp all-purpose flour and stir for 1 minute to coat the onions.

Slowly pour in 1 cup chicken broth and 0.5 cup whole milk, scraping up any browned bits from the bottom. Add 1 tbsp Worcestershire sauce and bring to a simmer. Cook for 5-7 minutes until the gravy thickens enough to coat the back of a spoon. Stir in 0.25 cup sour cream at the end for that signature creamy texture.

Slice the pork tenderloin into ½-inch thick medallions. Lightly toast the 8 whole butter buns in a dry skillet for 1 minute per side until golden. Spread each bun with about 2 tablespoons of the onion gravy.

Layer each sandwich with a pork medallion, the celery crowns, and a final drizzle of gravy. Garnish with 0.25 cup chopped fresh parsley for color and freshness. Serve immediately while the pork is still warm and the celery crowns are crisp.

Pro cooking tips for this recipe

Perfect Sear Technique

Start with a cold pork tenderloin from the fridge—never room temperature—because cold meat sears more evenly. I use a cast iron skillet (my favorite is a Lodge 10.25-inch) heated to medium-high heat until a drop of water sizzles instantly.

Add ½ cup cold butter and let it foam before adding the pork. The butter should bubble like crazy—this is the Maillard reaction at work, creating that golden crust we crave. 🔥

Sear for exactly 3 minutes per side—no more, no less. Overcooking here will dry out the pork before it even hits the oven. I like to flip using tongs to avoid piercing the meat, which would release juices.

After searing, transfer the skillet to the oven immediately to finish cooking.

Dry Brine Secret

Skip the wet brine—it makes the pork soggy. Instead, I do a dry brine overnight: coat the pork with 1.5 tsp Diamond Crystal kosher salt and ½ tsp black pepper, then refrigerate uncovered on a wire rack for 12-24 hours.

This creates a dry, flavorful crust while keeping the interior juicy. The salt penetrates deeply, so you won’t need to add more during cooking. Trust me, this step changes everything. 💡

Pro tip: If you’re short on time, do a quick brine—just season and let it sit on the counter for 1 hour before cooking. It won’t be as intense, but it’ll still be better than no brine at all.

Temperature Control

Use a meat thermometer—no guessing! The pork is done at 145°F internal temperature, but it’ll rise to 150°F as it rests. I pull it out of the oven when it hits 140°F to account for this carryover.

Let it rest for 10 minutes before slicing—this redistributes the juices and keeps the meat tender. 🌡️

If your pork hits 155°F before resting, it’s overcooked. The good news? It’ll still be edible, but it won’t have that melt-in-your-mouth texture. That’s why I always check the temp before slicing.

Celery Crown Crisp

The celery crowns are the star of the sandwich, and crispness is key. I slice them ¼-inch thick using a mandoline for even slices, then toss them in 1 tbsp Worcestershire sauce and 2 minced garlic cloves before cooking.

The sauce adds depth, while the garlic keeps them from getting bitter. 🧅

Cook them in 1 tbsp olive oil over medium heat—not too hot, or they’ll burn before crisping. They’re done when they’re tender but still hold their shape. If they soften too much, they’ll turn mushy in the sandwich. Remove them from heat immediately and set aside.