Microwave the cooked udon noodles for 1 minute at 600W. Cut the meat into bite-sized pieces. Slice the vegetables into easy-to-eat pieces.

Heat the vegetable oil in a frying pan. Add the meat and cook, then add the vegetables and stir-fry.

Once the vegetables are cooked through, add the udon noodles and water. Stir-fry everything together.

Season with Japanese BBQ sauce. When the noodles are well coated, turn off the heat and you're done! Garnish with white sesame seeds if you like.