Sweet Potato Lasagna - cooking recipe

Ingredients

1 tbsp vegetable oil
1 1/4 lb ground beef
2 None onions, peeled and finely diced
1 clove garlic, peeled and chopped finely
1 14 oz can diced tomatoes
1 1/2 cup vegetable stock
4 sprigs oregano, chopped
1 pinch ground cinnamon
1 pinch sugar
2 tbsp butter
2 tbsp all purpose flour
3/4 cup milk
1 cup mozzarella cheese, shredded
2 lb sweet potatoes, thinly sliced

Preparation

Heat the oil in a pan and cook the ground beef for about 10 minutes crumbling with the back of a spoon, until it's browned. Add the onions and garlic and cook for another 5 minutes. Add the tomatoes and 1/2 cup of stock, bring to a boil, and simmer for about 10 minutes. Add the oregano, cinnamon, and sugar and season to taste.
For the bechamel sauce, melt the butter in a saucepan. Add flour and cook while stirring for 2-3 minutes. Pour in the milk and 1 cup of stock, bring to a boil, and simmer for about 5 mins, while stirring constantly.
Preheat the oven to 400\u00b0F. Place alternating layers of bechamel sauce, meat sauce, and potato slices in a greased casserole dish. Finish with a layer of bechamel sauce sprinkled with shredded mozzarella. Bake for about 1 hour.