Can I make this without an oven-safe skillet?
Yes. Make the filling in a regular skillet, then transfer to a 9x13-inch baking dish or similar oven-safe casserole. Add the biscuits on top and bake as directed, but start checking a few minutes early and keep going as needed. Biscuit spread and bake time can vary a bit in a wider dish.
Is rotisserie chicken really the best shortcut?
For this recipe, absolutely. Rotisserie chicken adds instant depth. Use about 3 cups shredded chicken, mostly dark and white meat mixed, and skip the skin. Taste before adding extra salt, since some rotisserie birds are already pretty seasoned.
How do I keep the filling from getting watery?
Three things help a lot: cook off moisture from the veggies for a few minutes before adding liquid, let the roux simmer long enough to fully thicken, and avoid adding extra liquid at the end. Add frozen peas late so they stay bright and do not overcook. They can release a little moisture, but it should not thin the sauce much if your gravy is properly thickened.
Can I use canned biscuits?
You can, and it will still be tasty. Arrange them with a little space between each so heat can rise and bake the centers. Timing may vary, so bake until the tops are deeply golden and the centers are cooked through.
What if my biscuits brown too fast?
Loosely tent the skillet with foil for the last 5 to 10 minutes. If your oven runs hot, start checking around minute 14.
Can I make the filling ahead?
Yes. Make the filling up to 2 days ahead, refrigerate, then rewarm until hot and gently bubbling before topping with biscuit dough and baking. Putting biscuits on cold filling can lead to underbaked centers.