In a large pot, bring salted water to a boil. Add the pasta and cook according to package instructions until al dente. Reserve about 1 cup of pasta water before draining.
In a large skillet, heat the olive oil over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant.
Pour in the canned diced tomatoes (with their juice). Add dried oregano, salt, and pepper. Stir well and let it simmer for about 5-7 minutes, allowing the sauce to thicken slightly.
Reduce the heat to low and stir in the ricotta cheese until it's evenly mixed and creamy. If the sauce is too thick, add a bit of the reserved pasta water to reach your desired consistency.
Add the drained pasta to the sauce and toss until well coated. If needed, add more pasta water for a creamier texture.
Plate the creamy tomato ricotta pasta and garnish with fresh basil leaves and grated Parmesan cheese if desired.
Notes
Feel free to add more vegetables or protein to the dish for extra nutrition.