Add the oil, butter, and onion to a pot over medium-high heat. Sauté the onion for 3-4 minutes.
Add the garlic, Italian seasoning, and orzo. Cook for 2-3 minutes, stirring often (this infuses the orzo with more flavor and toasts it a bit).
Stir in the chicken broth and cream. Once it starts to bubble, continue cooking for 10 minutes, stirring fairly often. You will likely need to turn the heat down a bit (to medium or even medium-low). You want it to gently bubble vs. furiously boil, and you don't want the liquid to reduce too much before the pasta has cooked.
Take the pot off the heat, stir in the parmesan and spinach, and cover the pot for 3-5 minutes or until it has thickened up to your liking. The orzo will absorb the liquid quickly, so if it still seems like there's too much liquid, just wait a little bit longer. Season with salt & pepper as needed.
Notes
Orzo is pasta. If you want to make this with rice, you may have to adjust liquid measurements and cooking time (it would be a different recipe).
Feel free to leave the spinach out if it's not your thing or you don't have any. I just add it for a bit of color and texture and to make it a bit more nutritious.
Nutritional information is provided as a courtesy only and should be construed as an estimate rather than a guarantee. Ingredients can vary and Salt & Lavender makes no guarantees to the accuracy of this information.