Bolognese Sauce
Add the olive oil to a large, heavy-bottomed stock pot set over medium-low heat, then add the onions and garlic and cook, stirring, until the onions are soft, about 5 minutes. Add the brown sugar and ground cinnamon and cook, stirring, for 2 minutes.
Increase the heat to medium. Add the ground beef and a pinch of salt and cook, breaking apart the meat with a spatula, until it is cooked through and no longer pink, 5 to 7 minutes.
Add the tomato paste and cook, stirring occasionally, until it begins to caramelize, about 5 minutes.
Stir in the crushed tomatoes, tomato sauce and dried oregano. Reduce the heat to low, cover the pot and simmer the sauce for 10 minutes.
Remove the lid, taste and season the sauce with salt and pepper then serve.