"Make this tonight!..."
yellow squash, cut into 1/4-inch thick slices
yellow onion, peeled and chopped
olive oil
kosher salt
ground black pepper
large eggs
sour cream
mayonnaise
sharp cheddar cheese
chopped fresh thyme leaves
butter, melted, plus more for the pan
sleeves round butter crackers (such as Ritz), broken (about 3 cups)
Parmesan cheese