For an extra layer of flavor, consider browning the onions in a little butter before adding them to the casserole. Feel free to experiment with different types of cheese, such as cheddar or Monterey Jack, for a unique twist. If you don't have biscuit baking mix on hand, you can substitute it with a mixture of flour, baking powder, and salt. This casserole can be prepared ahead of time and baked just before serving. Simply cover it tightly with plastic wrap and refrigerate for up to 24 hours. Add about 10 minutes to the baking time if baking from cold.
Forest Wolf
Apr 30, 2025Ashley T: This recipe is so easy to customize! I added some diced ham for a heartier meal.
Eldora Doyle
Jan 1, 2025Jessica P: I found that 35 minutes was perfect for my oven. Just keep an eye on it to prevent over-browning.
Tyler Nolan
Sep 17, 2024Kevin R: Simple, straightforward, and tasty. A great way to use up summer squash.
Derick Bergstrom
Jul 8, 2024Sarah M: This casserole was a hit at our family dinner! Even my picky eaters enjoyed it.
Jerrod Schuppe
Sep 25, 2023Michael B: I used zucchini instead of yellow squash, and it worked out great. A versatile recipe!
Carroll Bradtke
Sep 25, 2023David L: I added a bit of shredded cheddar cheese on top during the last 10 minutes of baking, and it was amazing!
Hattie Mccullough
Jun 6, 2023Emily K: Easy to follow recipe and delicious results. I will definitely make this again.