1: In a pot over medium heat, melt the butter.
2: Add sliced onion and sauté until translucent.
3: Add minced garlic and stir briefly.
4: Halve the cherry tomatoes and add them to the pot, cooking until they start to soften.
5: Add tomato paste, oregano, and orzo; mix well.
6: Pour in the water and add salt; cover the pot and cook for about 8 minutes on medium-low heat, stirring occasionally to prevent sticking.
7: Add the cream and cook for an additional 5 minutes.
8: Finally, add the Parmesan cheese and stir until well combined.