Removed door frame - how to make it look nice?

[Tunamelt]

Hello! We have removed a door and door frame into this small room that we are converting into a pantry, to create a wider entrance, and the plan is also to keep it open without a door and door frame. Do you have any tips on how to fix around it in the nicest way?

 

[sinuslinus]

Install skirting boards 1.5-2 cm thick that protrude 10 mm over the wall. Then apply new plaster in the hole.