- Preheat the oven to 180° C fan. 
- Grate the pecorino. 
- Chop the mozzarella. 
- Clean & halve resp. quater the tomatoes. Squeeze to discard fluids & the pits/seeds. 
- Add salt & pepper to the cream. 
- Grab the casserole & oil the bottom. 
- Add 2 lasagna sheets. Distribute ⅓ of the tomatoes, ⅓ of the mozzarella, ¼ of the grated pecorino & some basil leaves. 
- Repeat last step twice.  
- Finish w/ 2 lasagna sheets (broken into parts) & add the rest of the grated pecorino on top.  
- Pour the cream all over the lasagna. 
- Let it bake in the oven for about 30 min. 
- Let the lasagna cool down & store on your kitchen counter or in your fridge until next day. 
- Reheat the lasagna in the microwave (or in your oven).