Step 1

Preheat oven to 400.

Step 2

Prepare a 8" square dish with cooking spray; set aside.

Step 3

In a mixing bowl, combine chicken, vegetables, soup, sour cream, and onions.

Step 4

Mix well.

Step 5

Spread mixture into prepared dish; set aside.

Step 6

Meanwhile, to prepare topping, combine baking mix, milk, and egg.

Step 7

Mix until blended.

Step 8

Pour over turkey mixture in dish.

Step 9

Bake for 30 minutes, or until top is browned.