Preheat your oven to 200 C ( 370 F).
Wash the mushrooms, remove the stems from the mushrooms, chop them finely and fry till cooked.
Heat oil in a medium pan,add chopped onion. Fry till golden color. Add shredded chicken fillet, salt, pepper and cream cheese. Cook for another 5-7 minutes. Add fried mushrooms stems and sun dried tomatoes. Mix well.
Coat a baking tray with oil.
Spoon into the mushroom caps with the filling. Place them on the baking tray and bake until golden brown. ( 20-30 minutes).
Serve with grated Parmesan cheese.
Viola! Stuffed mushrooms with sun dried tomatoes, chicken and cheese.