Dice your eggplant, fennel (you’ll need to remove the core first), and onion into large chunks
Slice your tomatoes in half, and mince your garlic
Place all the vegetables in the Crock-Pot, and pour the wine and ONE cup of vegetable stock over top
Season with salt and pepper, add in the Italian seasoning and pepper flakes, and stir everything together
Add the bay leaf
Cook on low for 4 hours
Remove the lid, discard the bay leaf, and – using a potato masher – mash all the vegetables together until everything is pureed and there aren’t any large chunks
Add the remaining 2 cups of vegetable stock and the pasta
Stir everything together so all the pasta is coated in liquid. Press the pasta down into the sauce and vegetable stock so that as much of it is submerged in liquid as possible
Cook for another 30-40 minutes (or until the pasta is cooked through) on high, stirring 2 or 3 times throughout to make sure the pasta is evenly cooked
Stir in the Parmesan and mozzarella and season with salt and pepper