In a Dutch oven with a lid, cook the rice according to the package.
Preheat the oven to 350℉.
While the rice is cooking, slice the green onions reserving the greens for garnish. In a skillet melt the butter over medium heat and add the green onions (whites). Cook until softened. Remove from heat and set aside.
Pour the can of Rotel into a food processor and chop to desired consistency.
When the rice is finished cooking, add the cubed Velveeta cheese. Place the lid on top and allow the cheese to melt for approximately 5 minutes.
Stir the cheese into the rice. Add the cooked onions, Rotel, Cajun seasoning, garlic powder, gluten-free cream of chicken and stir until thoroughly combined. Salt to taste.
Top with shredded cheese.
Bake in the oven with the lid on for 15 minutes.
Remove the lid.
Broil the casserole for about 4-5 minutes.
Garnish with green onions and serve,.