These Beef Wellington Bites feature tender seared beef, savory mushroom duxelles, prosciutto, and flaky puff pastry, baked until golden and served with a creamy horseradish sauce. An impressive yet approachable appetizer for holidays, parties, and special occasions.
8ounceswhite or brown mushrooms,stems removed and chopped
3tablespoonsyellow onion,chopped
2clovesgarlic
1teaspoonchopped fresh thyme,or a pinch of dried thyme, plus more for garnish
2tablespoonssalted butter
2tablespoonsbeef broth or stock,I use Better than Bouillon Roasted Beef Base and mix it with water
Beef
1tablespoonsalted butter
1tablespooncanola or vegetable oil
12ouncesfilet mignon or beef tenderloin,cut into 12 pieces of equal size
1teaspoonkosher salt
¼teaspooncoarse-ground black pepper
Bites-
1sheet of puff pastrythawed
3ouncesprosciutto,cut into 12 pieces of equal size
Instructions
In a small mixing bowl, whisk together the mustard, sour cream, mayo, horseradish, salt, and garlic powder. Cover and refrigerate until ready to use or up to 2 days in advance.
Add the mushrooms, onion, garlic, and thyme to the bowl of a food processor. Pulse until the veggies are finely minced.
Preheat the oven to 400°F and spray a 12-cup standard muffin tin with non-stick cooking spray.
Melt butter in a 10-inch cast-iron skillet over medium-high heat. Add the mushroom mixture and cook until all liquid released by the mushrooms has evaporated, stirring frequently. It will be almost like a paste. Add the beef broth and continue cooking until most of it has evaporated. Transfer the mixture to a clean bowl, then wipe your pan with paper towels.
Add the oil to the pan and set it over high heat.
Season the beef with salt and pepper. Once the oil in the pan is shimmering and hot, add the beef pieces in a single layer and sear each side for a few seconds. Remove the meat from the pan.
Roll one sheet of puff pastry into a rectangle about 13 × 10 inches, then cut it into twelve 3 to 3½-inch squares. This size fits neatly into a standard muffin tin without excess overhang.
Place each piece of puff pastry in a well of the muffin tin, pressing it down slightly to fill the cup. Use a fork to poke two holes in the base of the pastry. Divide the mushroom mixture evenly among the wells.
Place a piece of prosciutto on top of the mushroom mixture. Top with a piece of beef. Bake for 12-15 minutes or until the puff pastry is puffed and golden brown. Remove from the oven and let sit for 2 minutes before removing the pastry bites to a serving platter. Serve with a dollop of horseradish sauce and garnish with thyme, if desired.
Notes
If you use table salt or sea salt, reduce the amount of salt by half.This recipe calls for salted butter, but you can substitute unsalted. If you feel it could use more salt, add more to taste. Cook the mushroom mixture until very dry to prevent the pastry from becoming soggy.Don’t overcook the beef during searing; it finishes cooking in the oven.Keep the puff pastry cold until assembly.When rolling out the puff pastry, add a small amount of flour to your countertop and rolling pin to prevent sticking.