cajun crawfish and rice casserole

Ingredients

• - cooking spray
• 1 cup onion, chopped
• 1 cup green bell pepper, chopped
• 2 pounds crawfish tails, rinsed and drained, peeled and deveined
• 4 ounces light processed cheese, cubed (velveeta)
• 1 - 6 1/2 oz. container light garlic & herb spreadable cheese (such as alouette)
• 1 can reduced fat cream of mushroom soup, undiluted
• 3 cups wild rice, cooked
• 2 cups long grain white rice, cooked
• 1 cup green onion, chopped
• 1/2 teaspoon salt
• 1/4 teaspoon cayenne pepper (or more to taste)