In a large saucepan over medium heat, warm the vegetable oil.
Add chopped onion and fry for 3 minutes. Then add the garlic clove and fideos. Fry the fideos for 5 minutes, stirring constantly to prevent burning.
Pour in the chicken stock, reduce heat, and season with salt. Cook for 5 minutes.
Stir in frozen sweetcorn and peas. Cook for another 5 minutes, or until fideos are soft.
Ladle into bowls and garnish with crumbled feta and a squeeze of lime. Add a spoonful of your favorite spicy salsa for extra flavor. Serve with homemade corn tortillas, avocado slices, and a bit of mayo for a full meal.