https://southernboydishes.com/2015/07/18/horseradish-crusted-strip-steaks Preparation. To Serve To assemble your Vetkoek Steak Sliders with Horseradish Mayo – cut the vetkoek in half and give the bottom half a good slather of mayo. Slice thinly. Add onion; sauté until soft and lightly browned, about 5 minutes. Melt 2 tablespoons butter in large nonstick skillet over medium heat. Pile on some rocket and top with a generous portion of sliced steak. OK, I know that nutritionally, mayonnaise isn't good for me, but I love it! This one from Southern Living is good on grilled … Remove the steak from the heat and allow it to rest for at least 10 minutes before carving. Especially flavored mayonnaises (recipe#311769, recipe#309836, recipe#257925).