Preheat oven to 150 deg C. Remove crusts from bread, butter each slice one side only. Sprinkle 2/3 of the grated cheese onto 4 slices, sandwich with the remaining bread. Cut cheese sandwiches in half diagonally. Grease a shallow ovenproof dish with remaining butter. Arrange cheese sandwiches over base of dish. Beat eggs, stock and cream, pour egg mixture over sandwiches making sure each one is moistened. Allow to stand 30 minutes. Sprinkle remaining cheese on top, season with ground black pepper. Bake for 30 minutes or until pudding is set and golden.