Lasagne - cooking recipe

Ingredients

1 tbsp vegetable oil
1 small onion, finely chopped
1/2 medium carrot, coarsely grated
1 None celery stick, finely chopped
2 tbsp tomato paste
12 oz lean ground beef
1 1/2 cups jarred tomato pasta sauce
2 tbsp butter
2 tbsp flour
1 1/4 cups milk
3 None fresh lasagne sheets
1/4 cup grated mozzarella cheese
2 tbsp finely grated Parmesan cheese
None None Mixed salad, to serve

Preparation

Combine oil, onion, carrot and celery in a 3-quart microwave-safe bowl. Microwave on high (100%) for 4 mins or until vegetables soften. Stir in tomato paste. Microwave on high for 1 min more.
Add ground beef to vegetable mixture; stir to combine. Microwave on high for 4 mins or until beef is cooked through. Add pasta sauce, stirring to break up lumps. Microwave on high for 3-4 mins or until sauce thickens slightly. Let stand for 10 mins.
Place butter in a 4-cup microwave-safe measuring cup. Microwave on high for 1 min or until butter melts. Stir in flour; microwave on high for 40 seconds. Gradually add milk, whisking constantly until well combined. Microwave on high for 1 min. Whisk; microwave on high for 1 min more or until sauce boils and thickens.
Spread 1/3 cup meat sauce into a 5-cup, 2 3/4 inch-deep, 8 x 4-inch silicone loaf pan. Cover with a sheet of pasta, trimming to fit. Spread 1/3 of the remaining meat sauce over pasta sheet. Spread with 2 tbsp white sauce. Cover with another layer of pasta.
Repeat layering twice more, finishing with a layer of pasta. Spread remaining white sauce over lasagne. Sprinkle with mozzarella and Parmesan cheeses. Microwave on high for 2 mins.
Preheat broiler to high. Broil lasagne for 2 mins or until golden. Let stand for 2 mins. Serve with salad.