01 - Heat vegetable oil in a deep pot to 350°F. Line a tray with paper towels for draining.
02 - Slice each jalapeño lengthwise while wearing gloves. Remove seeds and membranes for milder heat or retain some for extra spice.
03 - Combine cream cheese, grated cheddar, chopped spring onion, minced garlic, smoked paprika, black pepper, and salt. Mix until smooth.
04 - Fill each jalapeño half generously with the cheese mixture, smoothing the top.
05 - Arrange three bowls: one with flour, one with beaten eggs mixed with milk, and one with breadcrumbs blended with cayenne pepper.
06 - Dredge stuffed jalapeños in flour, dip into the egg mixture, then coat thoroughly with the breadcrumb mixture.
07 - Fry the coated jalapeños in batches for 2 to 3 minutes, turning until golden brown and crispy. Drain on paper towels.
08 - Allow poppers to cool slightly before serving.