To make the filling, heat oil in a frying pan over medium-high heat. Add onions, and saute for 1-2 minutes or until softened. Add green beans, and sauté again. When the beans are half cooked, stir in carrot, broccoli and cabbage. Crush the stock cube and sprinkle on top. Cook, covered, stirring occasionally, for 2-3 minutes, or until the vegetables are tender. Remove from heat. Set aside.
To prepare the bread for roll ups, first remove the crusts. Then use a rolling pin to roll the bread flat. Roll them out as thin as possible.
Place the filling at the bottom end of the bread slices. Roll once inside to cover the filling. Then use water to wet both sides of the bread slices. Fold both the sides inside. Then roll up bread to form cylindrical shapes.
To seal the edge, dab a little water and roll pressing firmly. Set them aside.
Spread breadcrumbs in a small dish. To make the egg mixture, combine eggs and a dash of milk. Season with salt and pepper. Set aside.
Heat oil for deep frying over medium-high heat. Dip the roll ups first in egg mixture, and then roll in breadcrumbs. Place them oil. (fry in batches if needed). Turn occasionally to makes sure all sides are well browned. When done, drain on absorbent towel. Serve warm.