Heat ghee in a saucepan. Add the onion, bell pepper, almonds and raisins; cook until the veggies soften and are lightly browned around the edges, about 10~12 minutes.
Add the tomatoes and cook for 3~4 minutes.
Pour the onion-tomato mixture into a blender and grind into a thick sauce along with cream, salt and garam masala.
Pour the sauce back into the saucepan and simmer over lower heat, stirring it occasionally while cooking the paneer.