Orange Chicken!

Made this in my cooking class at BYU, really tasty.

4 chicken breast halves
1 beaten egg
1 Tbs water
1/4 c. cornstarch
2 Tbs butter
1/2 c. brown sugar
1/4 c. soy sauce
1/2 c. orange juice
1/4 c. vinegar
1 Tbs cornstarch in 2 Tbs water

Dip chicken pieces in egg wash made of beaten egg and water, then coat with cornstarch. Brown with butter until golden brown and place in shallow baking pan or casserole. Combine remaining ingredients except cornstarch and bring to a boil. Add cornstarch slurry as needed for a thin sauce. Adjust seasonings. Pour over chicken pieces and bake, covered, for 20 minutes, then remove cover and bake an additional 15 minutes.
Yield: 4 servings

I serve it with rice!