01 -
Move the oven rack to the center position and heat it to 200°C (400°F). This will ensure the food cooks evenly.
02 -
Dice the onion finely, then place a large pan over medium-high heat. Add the sunflower oil and let it heat till it looks shiny.
03 -
Toss the onion, minced beef, salt, and pepper into the pan. Break the meat into smaller bits as it cooks and let it brown nicely.
04 -
Once the meat cools a bit, mix it with most of the tomato sauce. Hold back a little of the sauce to spread at the bottom of your dish.
05 -
Pour a thin layer of the plain tomato sauce evenly across the base of a baking dish (around 23x33 cm / 9x13 inches).
06 -
Place 5 lasagne sheets on top, breaking as needed to fit. Spread 1 cup of ricotta over them, then 1.5 cups of the meat sauce.
07 -
Scatter 1 cup of the grated Emmental on top of the meat layer. This finishes off your first layer of the lasagna.
08 -
Keep layering the lasagna: noodles, ricotta, meat sauce, and Emmental. Save a bit of cheese for the final top layer.
09 -
Lay down the last lasagne sheets and top it with the remaining sauce. Use foil to seal the dish tightly. This helps keep moisture inside while baking.
10 -
Bake for 1 hour with the foil cover on. Carefully test the softness of the noodles by sliding a knife through the layers.
11 -
Take the foil off, sprinkle on the leftover Emmental, and return the dish to the oven. Bake for about 8-10 minutes, or until the cheese is golden and bubbling.
12 -
Before cutting, let the lasagna cool for 15 minutes. This allows it to firm up and makes serving easier.