Garlic Butter Steak Bites with Creamy Mash

There is a reason steak bites are the internet’s favourite weeknight dinner: a hard sear in a ripping-hot pan gives you all the flavour of a steakhouse in a fraction of the time, and tossing them through melted garlic butter makes them irresistible.

Here they sit on a cloud of creamy mashed potatoes that soaks up every drop of that garlicky butter. The whole thing is on the table in about 35 minutes, with one pan and one pot to wash up.

The secret is a dry steak, a hot pan and patience: do not crowd the cubes, or they will steam instead of sear.

Ingredients

• 700 g (1½ lb) sirloin steak, cut into 2.5 cm (1-inch) cubes
• 1 tsp kosher salt
• ½ tsp freshly ground black pepper
• 2 tbsp olive oil
• 60 g (4 tbsp) unsalted butter
• 6 garlic cloves, minced
• 1 tbsp fresh thyme leaves (or 1 tsp dried)
• 2 tbsp chopped fresh parsley, to finish

For the creamy mash

• 900 g (2 lb) floury potatoes (Maris Piper or Russet), peeled and quartered
• 60 g (4 tbsp) unsalted butter
• 120 ml (½ cup) warm whole milk
• Salt, to taste

Instructions

1. Make the mash: Boil the potatoes in salted water for 15-18 minutes until they fall apart when pierced. Drain well, return to the hot pot and mash with the butter, then beat in the warm milk until smooth. Season generously and keep warm with the lid on.
2. Prep the steak: Pat the cubes completely dry with paper towels — this is what gives you a deep golden crust. Season with the salt and pepper just before cooking.
3. Sear in batches: Heat the oil in a large cast-iron or heavy skillet over high heat until it shimmers. Sear half the cubes for 2 minutes per side until deeply browned; set aside. Repeat with the rest — overcrowding steams the meat instead of searing it.
4. Make the garlic butter: Lower the heat to medium, add the butter, garlic and thyme and stir for 30 seconds until fragrant and just golden — do not let the garlic burn.
5. Toss and serve: Return all the steak to the pan and toss for 1 minute so every cube is glossed in garlic butter. Spoon over the mash, scatter with parsley and serve immediately.

Tips for the best result

• Room-temperature steak sears better — take it out of the fridge 20 minutes before cooking.
• For medium-rare, pull the bites at an internal temperature of 52°C (125°F); they will rest up a few degrees.
• No cast iron? Use the heaviest pan you own and work in small batches.

Storing and reheating

Refrigerate leftovers in an airtight container for up to 3 days. Reheat gently in a skillet over medium-low heat with a splash of butter; the mash reheats well in the microwave with a spoonful of milk stirred through. Freezing is not recommended — the potatoes turn grainy.

Frequently asked questions

Which cut of steak is best for steak bites?

Sirloin is the sweet spot of tenderness and price. Ribeye works beautifully too; avoid stewing cuts, which stay tough with quick cooking.

Can I make this ahead?

The mash can be made a day ahead and reheated with warm milk. Sear the steak fresh — it takes under 10 minutes.

How do I keep the steak juicy?

Pat it dry, sear hard and fast, and do not overcook. One minute in the garlic butter is all it needs to finish.

What can I serve instead of mash?

Crusty bread for mopping up the butter, roasted baby potatoes or buttered egg noodles all work well.