Created by TxGriffLover on October 26, 2011
Step 1: To cook the steak, in a heavy-duty skillet, heat the oil over medium-high heat until shimmering, and season the steaks with salt & pepper.
Step 2: Add the meat to the skillet without crowding, in batches, if necessary, and cook on both sides until well browned and medium-rare, about 3 minutes per side, then transfer to a warm plate and cover loosely with foil to keep warm while preparing the sauce.
Step 3: To prepare the sauce, return the pan to medium-heat and add 1 T butter to the shallots; cook until the shallots are soft and translucent, 3-5 minutes.
Step 4: Add vinegar and stir to combine. Cook until the vinegar evaporates, 30-45 seconds.
Step 5: Add red wine and cook until reduced by half, 1-2 minutes.
Step 6: Remove the pan from heat and add remaining tablespoon butter, swirl to coat; taste and adjust seasoning.
Step 7: To serve, slice the steak into thin strips against the grain, over-lap the slices on a plate and pour over the red wine glaze.