Reduce heat to medium; add remaining 2 tablespoons butter and the shallots to skillet. Cook 2 to 3 minutes, stirring constantly, until lightly browned. Add apple cider, chicken broth and bacon to skillet; simmer uncovered 5 to 7 minutes or until liquid is reduced. Add pork back to skillet; heat 1 to 2 minutes or until heated through. Serve with mashed potatoes.