Pre heat oven at 350 F
Spray medium sized
Heat cooking oil in a pan and add in ground chicken.Cook chicken until brown or when it is cook through. Add in Mushroom and cook until soft. Season with salt and pepper according to your taste.Let cool.
In a medium sized bowl, mix basil,onion with the beaten egg. Add 1/4 teaspoon salt or season according to your liking.
Add in cooked mushroom and ground chicken mixture and mix.
Spray 12 cups muffin with non stick oil and pour in the ground chicken mixture.
Bake for 30 minutes or until egg is set.
Serve hot.