Use a large crockpot on high temperature setting. Dice onions and carrots and put in crockpot. Add moose roast. Slice garlic in small pieces. Add water, garlic and onion soup. salt and pepper to taste. Cover and cook for 4 hours.
Drain juice from meat into saucepan. Add bouillon cubes. Bring juice to boil. Add cornstarch and stir until juice turns thick and clear.
Pour gravy (juice) back into the crockpot with the moose and carrots/onions. Cook for another hour. When done, slice moose in thin slices. Place in center of serving platter, garnish with carrots and onions. Pour a small amount of gravy over moose and serve.
Mashed potatoes, rice or baked potatoes are fantastic with the remaining gravy.