Note: Use egg noodles if not vegan and use your favorite vegan cheese.
Preheat oven to 375°F; Pam a 2 to 3-quart casserole. Split tempeh horizontally then cut crosswise in half to make 4 squares.
In large deep skillet heat over over med high until hot. Add tempeh and fry, turn once. It should be lightly brown on both sides about 2 to 3 minutes. Drain on paper and sprinkle with the salt. As soon as you can handle it cut into 1/2-inch cubes.
Add onion to oil and cook over medium stirring a few times until lightly browned about 5 to 7 minutes. Add pepper and cook until it softens about 3 more minutes.
Add flour and cook stirring constantly for 1 minute. Whisk in soy milk and bring to a boil stirring frequently until sauce thickens. Reduce heat and simmer for 3 minutes then stir in Worcestershire sauce.
Remove from heat and stir in cheese until melted and smooth. Add noodles and peas. Season to taste. Transfer to baking dish.
Sprinkle cornflakes on top and bake for 25 to 30 minutes or until lightly brown and crispy on top.