I don't eat squash, but I do eat this! Yep, it is that good
Swapping sour cream for plain Greek yogurt alters the fat content significantly, leading to a thinner emulsion that requires more aggressive moisture control. Yellow squash and zucchini carry high water content, meaning that skipping the colander step will leave you with a watery bake. Line that colander with several layers of paper towels, press down gently on the diced vegetables after cooking them over medium-low heat, and let them sit for at least ten minutes to purge excess liquid before mixing.
Baking this dish at 350 degrees Fahrenheit demands a standard two-quart ceramic or glass baking dish that retains heat efficiently without scorching the dairy-heavy filling. If your kitchen lacks a traditional casserole dish, a heavy cast-iron skillet functions well, though cast iron conducts heat faster and may brown the edges of the cheddar cheese and butter mixture before the center reaches the proper temperature. Always butter the interior of your vessel thoroughly to prevent the crushed Ritz crackers from sticking during portioning.
Organizing your workflow efficiently prevents counter crowding when chopping onions and dicing six cups of vegetables in a compact cooking area. Sauteing the onions in butter in the same skillet used for the squash minimizes dirty dishes and streamlines the sequencing of tasks. Combine the sour cream, garlic powder, and grated cheddar cheese in a large mixing bowl while the vegetables drain, ensuring the assembly process flows smoothly without cluttering your workspace.