While not traditional, this is the way I make lasagne at home. While it takes a bit of time to prepare, it is fairly simple and undeniably moreish - the one meal I can eat back to back.
Preheat oven to 180ºC. In a large pot, heat olive oil over medium to high heat. Add onion, garlic, carrot, celery, dried oregano and bacon. Sauté until onion is translucent.
Add beef mince, and brown off. Add tomato sauce, red wine, milk, tomato paste and a pinch of salt and pepper. Bring to the boil, before reducing to a simmer. Simmer for 30-40 minutes, until liquid has reduced.
To make the béchamel: heat butter in a saucepan over a medium heat. Once melted, add flour and whisk, creating a roux. Reduce heat to low, add milk, one cup at a time, stirring constantly until sauce thickens. Add salt and nutmeg. Remove from heat.
In a large baking dish, begin assembling your lasagne by scooping a little bolognese sauce into the bottom. Top with lasagne sheets. Ladle béchamel sauce on top of pasta, followed by bolognese sauce, a sprinkle of cheese and more lasagne sheets. Repeat this layering until all ingredients have been used up; top your lasagne with a layer of cheese.
Place into the oven and bake for 20 minutes, until lasagne sheets are cooked through. Remove from oven and let stand for 10-20 minutes, before cutting and serving alongside a fresh salad.
Notes
Rather just using just beef mince, you can substitute for 500g beef mince and 500g pork mince.