HEAT oil in electric pressure cooker using the Sauté function. Add meat, in batches; cook 6 to 8 min. or until evenly browned, stirring occasionally. Spoon meat into bowl; set aside.
ADD garlic to cooker; cook and stir 30 sec. Add Worcestershire sauce and 3 Tbsp water; stir to scrape browned bits from bottom of cooker. Return meat to cooker along with the carrots, onions, gravy and thyme; stir. Close and lock lid.
COOK on HIGH 24 min. using Pressure Cooker function. Use Quick Release method to carefully vent steam before opening lid.
MIX flour and remaining water until blended. Add to stew; whisk until blended. Stir in peas; cover with lid. Let stand 5 min.
Special Extra:Garnish with sprigs of additional fresh thyme before serving.