Step 1

Preheat the oven to moderately hot, 200°C (180°C fan-forced).

Step 2

Heat oil in a large saucepan or deep frying pan; cook onion and garlic for about 5 minutes or until onion softens. Add mince, cook, stirring, until mince changes colour. Stir in the sauce and oregano; simmer, covered, for about 10 minutes or thickened slightly. Season to taste with salt and pepper.

Step 3

Grease a 2.5-litre (10-cup) capacity ovenproof dish. Spread 1/3 cup boscaiola sauce over base of dish. Layer two pasta sheets, 1/4 of the meat sauce and 1/4 cup of the cheese. Repeat layering, starting with pasta sauce and ending with cheese (you will have four layers in total). Top the final layer with remaining boscaiola sauce and remaining cheese.

Step 4

Bake lasagne, uncovered, for about 40 minutes or until the top is browned and pasta is tender. Stand for 10 minutes before cutting.