Combine first 5 ingredients in a small bowl; sprinkle evenly over veal.
Heat 1 teaspoon oil and 1 teaspoon butter in a large nonstick skillet over medium-high heat. Add half of veal to skillet. Cook 1 minute on each side or until lightly browned. Remove from skillet; set aside, and keep warm. Repeat procedure with remaining olive oil, butter, and veal.
Reduce heat to medium. Add the chopped shallots and presliced mushrooms to pan, and cook 1 minute. Add Irish whiskey, scraping pan to loosen browned bits. Add broth and sherry; simmer 3 minutes or just until sauce begins to thicken. Return veal to pan. Cover and simmer 1 minute or until thoroughly heated. Place veal on a serving platter, and top with mushrooms and sauce. Sprinkle with chopped fresh parsley, if desired. Serve immediately.