Wagyu Beef Sliders Recipe

1. Heat a large skillet over medium heat. Add 1 tablespoon butter and 1 tablespoon olive oil until butter melts and foams.

2. Add the thinly sliced onions and spread them into an even layer. Reduce heat to medium-low. Cook, stirring every 3–5 minutes, until onions soften and begin to brown, about 20–30 minutes.

3. After the onions have softened and begun to color, sprinkle in the granulated sugar, 1/2 tsp kosher salt and 1/4 tsp black pepper. Continue to cook, stirring occasionally, until deep golden brown and jammy, another 10–15 minutes.

4. Stir in 1 tablespoon balsamic vinegar, cook 1–2 minutes to deglaze and concentrate flavor. Taste and adjust seasoning. Remove from heat and set aside until assembly.

5. In a small saucepan over medium heat, melt 2 tablespoons butter. Whisk in 2 tablespoons flour and cook, whisking continuously, for 1–2 minutes to make a blonde roux (do not brown).

6. Gradually whisk in 1 cup whole milk and 1/4 cup heavy cream, bringing mixture to a gentle simmer. Whisk constantly until the sauce thickens to a smooth, coat-the-spoon consistency, about 4–6 minutes.

7. Remove saucepan from heat. Whisk in 2 tablespoons grated Parmesan, 1/2 teaspoon salt and 1/4 teaspoon white or black pepper until combined.

8. Stir in 1 teaspoon truffle oil and, if using, 1/2 teaspoon truffle zest or grated truffle. Taste and adjust seasoning. Keep warm (low heat or double boiler) until ready to assemble.

9. Form the patties: divide 1.5 lbs ground Wagyu into 12 equal portions (about 2 oz / ~56 g each). Gently shape each portion into a loose patty slightly larger than the bun—do not overwork the meat. Season both sides with the remaining 1.5 tsp kosher salt and 1 tsp black pepper.

10. Preheat a heavy skillet or griddle over medium-high heat. Add 2 tablespoons neutral oil and 2 tablespoons butter; heat until shimmering and butter just starts to brown.

11. Cook patties in batches to avoid crowding. Press each patty lightly with a spatula for even contact. Cook 2–3 minutes on the first side until a brown crust forms, flip, then cook 1.5–2 minutes for medium-rare to medium (adjust time for desired doneness). During the last 30–45 seconds of cooking, place a cheese slice on each patty and cover the pan briefly to melt.

12. Transfer cooked patties to a warm plate and tent with foil to rest for a few minutes between batches.

13. Toast buns: preheat oven to 350°F (175°C) or use a griddle. Brush insides of 12 slider buns lightly with 2 tablespoons melted butter. Toast in oven on a sheet pan for 4–6 minutes or on a hot griddle until golden and slightly crisp.

14. Optional: Spread a thin smear (about 1/4 teaspoon) of Dijon mustard on the bottom half of each toasted bun.

15. Spoon a generous tablespoon of warm truffle béchamel onto the bottom bun of each slider (reserve a little béchamel to drizzle after assembly if desired).

16. Place the rested Wagyu patty (with melted cheese) on top of the béchamel, then add about 1 tablespoon of caramelized onions over the cheese.

17. Top with a small handful of baby arugula or a few microgreens for brightness, then cover with the top bun. Lightly press to set and, if desired, finish with a few flakes of sea salt and a tiny drizzle (a few drops) of truffle oil.

18. Arrange sliders on a platter and serve warm. Yield: 12 sliders.