RECIPE IDEA: Mmmmm. This Squash Casserole is a yummy combination of veggies with just the right crunchiness. Hi. It's Lois in the kitchen at Recipe Idea Shop. Three recipes in my mother-in-law's "Casserole" book are simply labeled "Squash Casserole." She saved handwritten recipes for a variety of make-ahead casseroles in this book. Each Squash Casserole contains summer squash (yellow