|Place chicken breasts and taco seasoning in a resealable plastic bag; shake to coat well.|
Spray casserole dish with Pam. Place breasts in casserole. Bake 30 minutes at 375 degrees.
Top with salsa 5 minutes before breasts are done.
Top with sour cream before serving.
VARIATION: For grilling, grill seasoned chicken over medium-high heat until done. Top with salsa and sour cream to serve.