Cook pasta according to package directions. Add carrots during last 5 minutes of cooking time.
Meanwhile, thaw onions in microwave oven at high power about 2 minutes or in a bowl of cool water. Then drain. Combine flour, salt and pepper in a plastic bag. Add half of beef to bag and shake to coat.
Melt 1 tablespoon butter in a large, deep nonstick skillet over medium-high heat. When melted add floured beef. Quickly brown beef, turning once, about 2 minutes. Transfer to plate and set aside.
Melt remaining tablespoon of butter in skillet. When melted brown the remaining beef, reserving any flour mixture in bag. Transfer beef to same plate as before..
Add garlic to drippings in the skillet and cook for 2 minutes, stirring to make sure it won't burn. Add any remaining flour and mix well. Add beef broth, thawed pearl onions, wine and thyme to skillet and bring to a boil.
Stir in reserved beef. Simmer uncovered about 4 minutes or until beef is pink in center and sauce has thickened slightly.
Drain pasta and carrots; arrange in shallow wide bowls. Toss pasta with beef mixture and sprinkle with fresh thyme.
Notes
Beef Bourguignon is an old classic that always taste so good. Served with fettuccine for a warming hearty meal.