Peel the onion and garlic cloves and cut into pieces. Chop for 8 seconds at level 6 of 10 in the blender jug. Add the olive oil and tomato paste and sauté for 2 minutes at 100 degrees on level 2. Add the peeled tomatoes and chop on speed 6 for 15 seconds. Pour in the cream and season to taste, then cook for 15 minutes at 100 degrees on level 2. Finally season with salt and pepper.