1. Lightly coat stew beef with flour. Heat oil in a large, heavy skillet over medium-high heat until a drop of water sizzles in the oil; add beef and brown, stirring frequently, about 10 minutes; transfer to paper towels to drain. Return skillet to heat.
2. Add onion and garlic, sautéing until lightly browned, 8 to 10 minutes. Carefully stir in water, bouillon cubes, salt, Worcestershire sauce and pepper. Return meat to skillet, reduce heat and simmer for about 1 1/2 hours.
3. Add potatoes, carrots and green pepper; simmer for another 20 minutes. Stir in peas.
4. preheat oven to 450°F (230°C).
5. Line a 9-inch pie pan with one of the crusts, letting the edge drape over the side; using a slotted spoon, fill pie with beef filling. Add a little of the cooking broth to filling, if desired. Top with remaining crust, fold bottom edge up over top edge, crimp edge with a fork and cut a few small slits in top crust to allow steam to escape while cooking.
6. Bake for 10 minutes, then reduce temperature to 350°F (175°C) and bake for 30 more minutes.