01 -
In a big heavy pot, warm up the olive oil on medium-high heat. Toss in the diced onion, carrot, and two sliced garlic cloves. Cook until the veggies soften and start to caramelize.
02 -
In the same pot, throw in the ground beef. Cook it up, breaking it into smaller chunks, until it's browned and loses the pink color, about 4 minutes. Mix in the crushed tomatoes, oregano, and water. Add salt and pepper to taste. Lower the heat to medium-low and let it simmer until it thickens, roughly 8 minutes. Take it off the heat when done.
03 -
In a medium bowl, mix together the remaining garlic, drained spinach, ricotta, half of the grated parmesan, and the egg until everything's well blended.
04 -
Set the oven temperature to 200°C. Spread 250 ml of the meat sauce across the bottom of a 2-litre baking dish. Layer it with parboiled lasagna noodles, more meat sauce, half of the spinach ricotta mixture, and a third of the mozzarella. Keep layering, ending with the rest of the mozzarella on top.
05 -
Sprinkle the remaining parmesan over the top layer. Bake in the center of the oven for about 25 to 30 minutes or until it's golden and bubbling. Let it cool for a bit, then top with fresh basil leaves right before serving.