Typically, you'll want to bake your lasagna in a preheated oven at around 375°F (190°C) for about 30-40 minutes. But, if you're making a smaller lasagna, you might need to adjust the time to around 20-25 minutes. And, if you're using a convection oven, you can even bake it faster, in around 15-20 minutes!
The key is to keep an eye on your lasagna and check it regularly, so it doesn't get overcooked or undercooked. You want the cheese to be melted and bubbly, and the pasta to be al dente. And, let's not forget about the aroma, oh the aroma of freshly baked lasagna, it's like a warm hug for your senses!