Heat the butter or olive oil in a pan over medium heat. Add the mushrooms and sauté until tender and lightly browned. Remove from the pan and set aside.
Add the Natural Heaven Hearts of Palm White Rice to the same pan and sauté for 2–3 minutes to release its natural moisture and prevent it from becoming watery.
While the rice is still sautéing, add the garlic, thyme, salt, and freshly ground black pepper. Season generously; the mild flavor of hearts of palm makes it a great base for building bold, savory flavors.
Return most of the mushrooms to the pan, reserving a few for topping. Add the broth and cream, then stir in the Parmesan until everything is well combined and creamy.
Reduce the heat and let the risotto gently simmer for about 10 minutes, stirring occasionally. This gives the Hearts of Palm Rice time to absorb the sauce and develop a richer flavor.
Top with the reserved mushrooms, fresh thyme or parsley, and a little extra Parmesan if desired.