01 -
Cook kale in a pan with a little melted butter over medium-low heat until it wilts, about 3-4 minutes. Add in green onions and set aside.
02 -
Throw your diced potatoes into a pot of salted water and bring it to a boil. Cook them until they're fork-tender.
03 -
Combine melted butter and Irish whiskey in a large Ziploc bag, and toss in the sirloin steaks. Seal it tight and stick it in the fridge for at least 3 hours.
04 -
Turn the oven on and set it to 400°F (200°C).
05 -
Once the potatoes are ready, drain the water. Toss them back in the pot, stir in milk, and mash them up until they're as chunky or smooth as you like. Add the kale and mix everything together, seasoning with salt and pepper.
06 -
Bring the marinated steaks out of the fridge and let them rest at room temperature for about 30 minutes.
07 -
Heat up a cast iron skillet on high for a few minutes, then add the vegetable oil. Pat your steaks dry, throw them on, and cook each side for about 2-2½ minutes for a good sear.
08 -
Once seared, place the steaks on a baking tray. Bake for 2-6 minutes depending on how done you like them.
09 -
Turn the heat down to medium-low under the skillet where the steaks cooked. Toss in some butter until it melts, followed by the garlic and shallots. Let that cook for a minute or two.
10 -
Carefully add whiskey to the skillet—turn off the heat as a safety measure and reignite just after adding. Stir until most of the whiskey cooks off.
11 -
Stir in cream, mustard, and beef stock, plus a pinch of salt and pepper. Let the sauce simmer on low until it thickens enough to coat the back of a spoon, about 8-10 minutes.
12 -
Serve your steaks with a bit of that creamy whiskey sauce poured on top, and your colcannon on the side.