Steps
1. Boil rigatoni in salted water until al dente, drain and set aside.
2. In a small bowl, whisk together flour, cornstarch, and ground oats with milk and water until smooth.
3. In a pan, melt butter over medium heat. Add diced onion, grated carrot, diced tomato, and chopped Brussels sprouts. Sauté until softened.
4. Stir in tomato paste, ketchup, barbecue sauce, hot sauce, mustard, curry powder, vinegar, aji chili, salt, and pepper. Cook for 3-4 minutes.
5. Add condensed chicken soup and sardines, break sardines into smaller pieces, and mix well.
6. Pour the flour-oat mixture into the pan, stirring constantly until the sauce thickens.
7. Toss the cooked rigatoni into the sauce to coat evenly.
8. Transfer the pasta mixture to a baking dish suitable for the air fryer.
9. Crack the egg on top and place the cheese slice over the pasta.
10. Air fry at 180°C (360°F) for 8-10 minutes until the egg is set and cheese melted.
11. Serve hot, optionally drizzled with a little extra hot sauce or mustard.