Dissolve Better Than Bullion and brown sugar into hot, boiled water. Add soy sauce and set aside.
Brown both sides of your beef in a hot skillet. Let cool and slice it into 2" pieces. Return to skillet and fry until completely cooked. Add sauce mixture and cook for about one minute, set aside.
Dice carrots and broccoli into two inch pieces. Sautee carrots in hot oil until softened, add broccoli and cook for about 3 minutes. Mix in garlic and remove form heat.
Toss spaghetti, vegetables and beef together, in a large dish. Serve hot.