Preheat your oven to 400 degrees
Peel the squash and slice it into 1/8 inch thick slices
Dredge the squash slices in the flour and transfer them to a bowl.
Oil a 9x13 inch baking dish and sprinkle the bottom with breadcrumbs.
Alternate 3-4 layers of squash slices, Parmigiano cheese, mozzarella, sage leaves and speck.
Top the final layer of squash slices with more breadcrumbs, Parmigiano cheese, sage leaves and salt & black pepper as desired.
Crumple parchment paper under running water. Squeeze out the excess water and cover.
Bake for 20 minutes covered. Uncover and bake for an additional 20 minutes.
Cook under the broiler for an additional 2-3 minutes, or until the top is crispy and browned.
Let sit for 15-20 minutes before serving.
*You can make this the day before and reheat. Or even serve it warm/room temperature