Patty Melt Sliders for Easy Memorial Day Grilling
Patty melt sliders bring classic diner comfort to the grill in a format that works for Memorial Day weekend—juicy beef, sweet caramelized onions, and melty Swiss, scaled into small, shareable sandwiches that hold up on a buffet table.
Equipment
- Large skillet
- Grill or flat-top griddle
- Cast-iron or heavy skillet
- Mixing bowl
- Tray or plate
- Instant-read thermometer
- Foil or lid (for melting/steaming)
Ingredients
- 500 g 80/20 ground beef 1 lb
- 1 large yellow or sweet onion thinly sliced (about 250 g / 9 oz)
- 2 tbsp unsalted butter divided
- 1 tbsp olive oil
- 1 1/2 tsp kosher salt divided
- 1/2 tsp freshly ground black pepper
- 1/2 tsp onion powder
- 1/2 tsp garlic powder
- 1 tsp Worcestershire sauce optional
- 8–10 slider buns or small soft rolls split
- 6–8 slices Swiss cheese cut into quarters
- 2–3 tbsp softened butter or neutral oil for brushing buns before toasting
- 2–3 tbsp prepared Thousand Island or burger sauce optional spread
Instructions
- Caramelize the onions. Place a large skillet over medium heat and add 1 tbsp butter plus the olive oil. When the butter melts and foams, add the sliced onions and 1/2 tsp salt. Stir to coat, then spread into an even layer.
- Slow-cook until golden. Reduce heat to medium-low. Cook the onions, stirring every few minutes, for 20–25 minutes until soft, deep golden, and sweet. If the pan looks dry or browned bits start to scorch, add a splash of water and scrape up the fond. Kitchen note: If your onions are browning in spots but still firm, the heat is too high—drop the heat and add 1–2 tablespoons of water to loosen everything before they burn.
- Finish and hold the onions. Taste and adjust salt if needed. Transfer onions to a bowl and cover loosely; they will stay warm for a while, or can be reheated for 1–2 minutes later.
- Mix the slider meat. In a bowl, combine the ground beef, remaining 1 tsp salt, black pepper, onion powder, garlic powder, and Worcestershire sauce. Gently mix with your hands until seasonings are just distributed. Avoid overworking so the sliders stay tender.
- Form thin patties. Divide the meat into 8–10 equal portions. Shape into balls, then flatten into thin patties slightly wider than your slider buns—they will shrink as they cook. Place on a tray or plate and chill for at least 10 minutes to firm up if you have time.
- Preheat your cooking surface. For an outdoor cookout, heat a greased grill or flat-top griddle over medium to medium-high heat. Indoors, use a cast-iron or heavy skillet over medium heat. You want a steady sizzle, not smoking oil.
- Toast the buns. Brush the cut sides of the slider buns lightly with softened butter or oil. Toast on the grill or in the skillet, cut side down, for 1–2 minutes until lightly golden. Move to a tray, toasted side up. Kitchen note: Toasting now keeps buns from going soggy; if your grill is crowded, toast under the broiler for a minute—watch closely.
- Cook the patties. Add a little oil or butter to the hot grill or pan if it looks dry. Add the patties in a single layer without crowding. Cook for 2–3 minutes on the first side until nicely browned around the edges.
- Flip and add cheese. Flip each patty and immediately top with 2 small pieces of Swiss cheese. Cook another 2–3 minutes, until the cheese is mostly melted and the patties reach about 70°C / 160°F internal temperature for fully cooked beef.
- Warm the onions briefly. While the patties finish, rewarm the caramelized onions over low heat in the same skillet you used earlier, adding the remaining 1 tbsp butter if they seem dry.
- Assemble the sliders. Spread a thin layer of Thousand Island or burger sauce on the toasted side of each bottom bun, if using. Place a cheesy patty on each. Top with a spoonful of warm caramelized onions.
- Add the top buns and melt through. Cap with the top buns. For extra-melty sliders, arrange assembled sliders back on the grill or in the pan, cover loosely with foil or a lid, and heat for 1–2 minutes just until the cheese fully melts and the buns are warm. Kitchen note: Trapping steam with a lid/foil is more effective than turning heat to high, which can dry out the meat.
- Serve hot. Transfer to a platter and serve immediately while the cheese is soft and the buns are still crisp at the edges.
Nutrition
Calories: 610kcalCarbohydrates: 34gProtein: 34gFat: 38gSaturated Fat: 16gCholesterol: 125mgSodium: 1150mgPotassium: 520mgFiber: 2gSugar: 7gVitamin A: 450IUVitamin C: 6mgCalcium: 320mgIron: 4.5mg
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