In a medium sauce pan, cook the brown sugar until it melts and caramelizes.
Add the onions and stir.
Add the red wine and bring to a boil.
Add the thyme and reduce the heat to a simmer. Continue to cook till the sauce is reduced by half.
Season with salt and pepper, to taste.
Remove from heat and keep warm until ready for assembly.
Redefine Beef Flank
Remove the defrosted Redefine Beef Flank from the package.
Slice the Redefine Beef Flank, against the grain, into three medallions, 3cm (1.18 inches) wide.
Rub generously with oil.
Pan sear the medallions over medium to high heat, about 3-5 minutes per side (until, an instant read thermometer inserted into the center of each medallion, reaches a temp of 72°C (160°F).
Remove the medallions from the pan and slice along the grain into 30 small ½ -1cm (1/5-2/5 inch) thick, slices.
Season with flaky salt, crushed black pepper and olive oil.
Dish Assembly
Warm a serving plate.
Arrange the Redefine Beef Flank slices on the warmed plate.