Lasagna without breasts bay

2 tablespoons extra virgin olive oil 1 lb ground beef (extra lean) 1 large onion , finely chopped 2 carrots , peeled and grated 4 garlic cloves , finely[...]

2 tablespoons butter 6 slices bacon , diced 1/4 lb ham , diced 1/2 lb ground veal or 1/2 lb ground pork (or 1/4 pound of each) 1 lb ground beef 1 1/2 cups[...]