White Castle Sliders Recipe
Punching holes in the thin patties before cooking lets steam pass through them instead of just around them, so the beef cooks through fast without ever needing a flip, and a layer of onions under the meat steams the patties while flavoring them at the same time, the two tricks that give White Castle sliders their soft, almost fried-onion-scented texture.
- Prep
- 20 min
- Cook
- 15 min
- Total
- 35 min
- Servings
- 12
Ingredients
- 1 1/2 lb ground beef, 80/20
- 1/4 cup dehydrated minced onion
- 1/2 cup water, for steaming
- 1 tsp salt
- 1/2 tsp black pepper
- 12 buns small square or round slider buns
- 12 slices dill pickle slices
Nutrition per serving
- Calories
- 227
- Protein
- 12g
- Carbs
- 15g
- Fat
- 13g
Based on the recipe as written, one serving. Recalculates if you swap an ingredient above. An estimate only, exact values depend on the specific ingredients used.
Need different units or a different yield? Try our Conversion Calculator →
Instructions
- 1Place the dehydrated minced onion in a small bowl, cover with the water, and let it sit for 5 minutes to soften slightly; it doesn't need to fully rehydrate.
- 2Divide the ground beef into 12 equal portions, about 2 ounces each, and press each into a very thin square patty, roughly 1/4 inch thick and a bit wider than your buns since they'll shrink as they cook.
- 3Using a fingertip or the handle end of a wooden spoon, punch 5 evenly spaced holes through each patty, straight through to the other side.
- 4Heat a large griddle or heavy skillet over medium-high heat. Scatter the soaked onion (with its liquid) in a thin, even layer over the cooking surface.
- 5Lay the patties directly on top of the onion layer without pressing them down, and season the tops lightly with salt and pepper.
- 6Let the patties cook undisturbed for 2 minutes, until the edges start to sear and the onions underneath begin to sizzle.
- 7Add a splash more water around the edges of the patties if the pan looks dry, then cover the pan with a lid and steam for 3 to 4 minutes, until the patties are cooked through and no pink remains.
- 8Split the slider buns and lay the bottoms cut-side up on a tray. Use a thin spatula to transfer each patty (with its layer of steamed onion still stuck to the top) onto a bun bottom.
- 9Top each with a pickle slice and the bun top, and serve immediately while hot.
Tips & variations
- Freeze the shaped, holed patties on a parchment-lined tray for 15 minutes before cooking; they hold their shape better on the griddle and are easier to transfer without tearing.
- For a cheese version, add a small square of American cheese to each patty in the last minute of steaming, then close the lid to melt it.
- Onion flakes give the closest flavor and texture to the original; fresh minced onion works too but sear it directly on the griddle for a minute before adding the patties so it doesn't stay raw and crunchy.
- Double up the patties on each bun for a
Storage & reheating
Store assembled or unassembled sliders in an airtight container in the refrigerator for up to 3 days. Reheat patties in a covered skillet with a tablespoon of water over low heat for 2 to 3 minutes to bring back the steamed texture; microwaving works too but makes the bun soggy faster.
Tips from the Tulo kitchen
- Keep the ground beef cold until it hits the griddle; warm beef is harder to press thin and holds its shape less cleanly when punched.
- Resist pressing down on the patties with a spatula while they cook, flattening them further squeezes out moisture and toughens the meat.
FAQ
Why does White Castle punch holes in their sliders?
The holes let steam pass directly through the thin patty as it cooks on the griddle, which is what lets such a small, thin burger cook through evenly without being flipped or overcooked at the edges.
What buns are closest to the real thing?
Small square potato rolls or dinner-roll-style slider buns, about 2.5 to 3 inches across, are the closest match; they're soft enough to steam-soften slightly under the patty.
Can I make the patties ahead and freeze them?
Yes. Shape and punch the raw patties, separate them with parchment paper, and freeze flat in a single layer for up to 2 months. Cook straight from frozen, adding a minute or two to the covered steaming time.
Do I need a griddle, or does a skillet work?
A large nonstick or cast iron skillet works fine as long as it has a lid; the covered steaming step is what matters, not the specific cooking surface.
