So this Wellington WAS actually prepared using Gordon Ramsay's recipe, and it turned out delicious.
Mushroom duxelles: 1 pound cremini mushrooms, coarsely chopped 1 tablespoon extra-virgin olive oil 1/2 teaspoon salt 1/4 teaspoon black pepper
For beef Wellington: ~2 pounds filet mignon Salt and pepper 2 tablespoons olive oil 1/4 cup Dijon mustard 1/2 pound prosciutto 1 sheet puff pastry, thawed 1 egg yolk 1 tablespoon whole milk
DIRECTIONS
To make mushroom duxelles: Add mushrooms to a food processor and process until completely smooth. The consistency is similar to wet hummus.In a pan over medium heat, add mushroom paste, olive oil, salt, and pepper. Spread the mixture evenly over the surface and cook on a medium-low heat until the moisture in the paste has reduced and the mixture has the consistency of a spreadable pâté. Remove from heat and let cool.
7/25/16
Gordon Ramsay Beef Wellington Recipe
TV Dinners: Make the Infamous Beef Wellington From Hell's Kitchen
by Nicole Iizuka July 25, 2016
8.7K

The most infamous dish from Gordon Ramsay'sHell's Kitchen has to be the beef Wellington, a traditional British dish consisting of a seared filet mignon smothered in a whole-grain mustard and wrapped in layers of salty prosciutto, an herbed crepe, duxelles (mushrooms that have been pulverized into a paste), and puff pastry. The whole package is then baked until the crust crisps up and the meat reaches medium-rare perfection.

Season after season, it never gets old watching chefs f-up beef Wellingtons and receive a severe verbal spanking from chef Ramsay. Viewers and show contestants alike know the most feared question to come out of Ramsay's mouth is, "Who cooked those Wellingtons?" While Gordon plays a tough guy on screen, behind the scenes he's every bit the funny jokester.

I know this because before coming to POPSUGAR, I spent a few years and few seasons working on Ramsay's shows Master Chef and Hell's Kitchen. Two weeks into the job, I found myself tasked with learning how to make beef Wellington. Thankfully I had a fantastic teacher, one of Gordon's behind-the-scenes sous-chefs, who walked me through the process step-by-step and in great detail. Think you're up for the challenge? Take a look at the recipe below.
Adapted from Gordon Ramsay
Beef Wellington
NOTES
Are you more of a visual person? WatchGordon Ramsay make a beef Wellington on camera before attempting the recipe to see more visual cues.
Duxelles is something every good cook should have in their arsenal of tricks. It can be used in place of liver mousse for a vegetarian spread. In addition, try topping it over any rich meat, and you'll be surprised by the intense flavor it brings.
INGREDIENTS
For mushroom duxelles: 1 pound cremini mushrooms, coarsely chopped 1 tablespoon extra-virgin olive oil 1/2 teaspoon salt 1/4 teaspoon black pepper
For herb crepe: 1/2 cup all-purpose flour 2 eggs 1 teaspoon sugar 1/2 teaspoon salt 2 tablespoons chives, minced 1/2 cup whole milk 1/4 cup water 4 tablespoons butter, melted, plus more if needed for pans
For beef Wellington: 2 pounds filet mignon Salt and black pepper, to taste 2 tablespoons olive oil 1/4 cup whole-grain Dijon mustard 1/2 pound prosciutto di Parma 1 sheet puff pastry, thawed 1 egg yolk 1 tablespoon whole milk
DIRECTIONS
To make mushroom duxelles: Add mushrooms to a food processor and process until completely smooth. The consistency is similar to wet hummus.In a pan over medium heat, add mushroom paste, olive oil, salt, and pepper. Spread the mixture evenly over the surface and cook on a medium-low heat until the moisture in the paste has reduced and the mixture has the consistency of a spreadable pâté. Remove from heat and let cool.
Preheat the oven to 400º F.
To make steaks: Pat filet mignon dry with paper towels and season generously with salt and black pepper. Heat a skillet over medium-high heat and add olive oil. When the oil begins to smoke, add the filet mignon and brown from 1 to 2 minutes on all sides. You want to create a nice sear on the outside of the steak but leave the inside raw. Remove from heat and place on a cutting board to cool.Cover cooled filet with Dijon mustard.
To roll the beef Wellingtons: On a cutting board, lay out a long piece of plastic wrap. In the middle of the wrap, lay out a crepe. Spread mushroom duxelles over the crepe. Lay out the prosciutto on top of the duxelles. Place filet in the center of the crepe and gently wrap the crepe around the filet. Trim off any excess and use the plastic wrap to tightly wrap the steak.Lay out a clean, long piece of plastic wrap. Gently roll out puff pastry until it is a 1/4-inch thin. Place the wrapped steak on one end of the puff pastry and wrap. Pinch the ends closed and trim off any excess puff pastry. Use the plastic wrap to tightly seal the puff pastry. Pop it in the fridge for about 5 minutes to let it firm up again.In a bowl, mix together egg yolk and milk.
Place a sheet of parchment paper or aluminum foil on a baking sheet. Remove Wellington from fridge, remove the plastic wrap, and lay the Wellington seam-side down on the baking sheet.
Baste the top of the puff pastry with the egg wash and bake for approximately 25 to 30 minutes or until the internal temperature of the steak reaches 125º F, or to whatever temperature you prefer your steak.Remove from the oven and let rest for at least 10 minutes before slicing into medallions. Serve warm.