Lasagna without parmesan breasts

1 tablespoon olive oil 1 small onion , chopped 1/2 cup chopped celery 1/2 cup chopped carrot 3 garlic cloves , minced 2 (14 1/2 ounce) cans chopped tomatoes 4[...]

3 tablespoons extra virgin olive oil 3 tablespoons butter 1 cup onion , finely diced 1/3 cup carrot , finely diced 1/4 cup celery , finely diced 1 garlic[...]

3 tablespoons extra virgin olive oil 3 tablespoons butter 1 cup onion , finely diced 1/3 cup carrot , finely diced 1/4 cup celery , finely diced 1 garlic[...]

375 g oven-ready lasagna noodles 2 slices bacon , minced 4 tablespoons butter 1/2-1 onion 1 garlic clove , minced 1 carrot , chopped 1 celery , chopped 1[...]