In a heavy-bottomed pot over medium heat, add olive oil. Once hot, add the chopped mixture and cook until fragrant, about 4-5 minutes.
Add the soffritto mixture back into the pot with kosher salt and cook down until deeply browned, around 15-20 minutes.
Season the meats with kosher salt and add to the pot. Cook without stirring until browned, then crumble.
Stir in tomato paste until everything is coated evenly.
Deglaze with apple vinegar and add the herb sprigs and bay leaves.
Pour in crushed tomatoes and broth or water; stir well before reducing heat to medium-low and let simmer for about an hour and a half.
Once done, mix in heavy cream along with grated parmesan and adjust seasoning if necessary.
While the sauce simmers, combine ricotta cheese with basil pesto, eggs, and season as desired until smooth.
To assemble, spray a baking pan with nonstick cooking spray, ladle some bolognese sauce across the bottom, layer with pasta sheets and half of the basil pesto ricotta, followed by mozzarella.
Continue alternating layers until reaching the top with remaining mozzarella blend.
Cover tightly and chill overnight or at least twelve hours.
Preheat the oven, place the assembled dish on a rimmed baking sheet, and bake covered initially then uncover for the last ten minutes.