01 -
Layer the chicken breasts in the bottom of a slow cooker that’s at least 5 quarts in size.
02 -
Evenly sprinkle garlic powder, oregano, and black pepper over the chicken.
03 -
Scatter the diced onion over the chicken, then add the frozen vegetables on top.
04 -
Stir together the cream of chicken soup, cream of celery soup, and chicken broth in a mixing bowl until smooth.
05 -
Drizzle the soup mixture over everything in the slow cooker.
06 -
Cover with the lid and cook for 4 to 5 hours on high, or 6 to 8 hours on low, until the chicken hits 165°F inside.
07 -
Take the chicken out and shred it with forks. Return the shredded meat to the slow cooker, mix everything, and switch to the warm setting.
08 -
Follow the baking instructions on the biscuit package while the slow cooker stays on warm.
09 -
Scoop the chicken mixture onto plates or bowls, and put the hot biscuits on top before serving.