Add beef, cook until browned, then stir in seasonings and tomato paste.
Stir in peppers, rice, and stock; simmer covered for 12-15 minutes until rice is cooked.
Remove from heat, let rest covered for 10 minutes, then fluff rice. Top with cheese, melt under broiler, garnish with spring onions, and drizzle with Cajun mayo before serving.
Notes
For extra flavor, use a mix of cheeses and adjust seasoning to taste.