[Request] After an illness I got way too skinny and am now looking to gain weight. What are some recipes that can help me to achieve that?

I was sick for 4 weeks and lost (for my conditions) a lot of weight. I always was really skinny but that never interfered with my day to day life.

Now I have a BMI (yes, yes not that reliable, whatever) of 15 and I feel bad.

So, I'm looking for food recipes to increase my weight. Anything goes, I have no allergies and eat every type of food.

Optimal would be something that I can eat besides my regular meals with my family, but individual dishes are also great.

Thanks.

bon appetit