01 - Divide the ground beef into 8 equal portions and roll into balls. Season each generously with smoked paprika, garlic powder, salt, and black pepper.
02 - Heat a large skillet or griddle over medium-high heat. Add a drizzle of vegetable oil and allow it to shimmer.
03 - Place 2 seasoned beef balls onto the hot skillet. Using a sturdy spatula, press each ball firmly to flatten into thin, even patties.
04 - Cook the smashed patties for 2 minutes until the edges turn deeply golden and crispy. Lay a slice of cheddar cheese on each patty, then place a flour tortilla on top. Press down gently so the melting cheese bonds to the tortilla surface.
05 - After 1 to 2 minutes, carefully flip each patty and tortilla together so the tortilla faces the skillet. Toast for about 1 minute until the tortilla is golden brown and crisped.
06 - Transfer finished tacos to a plate and repeat the smashing, cheese-melting, and toasting process with the remaining beef balls, cheese slices, and tortillas. Add more oil to the skillet between batches as needed.
07 - In a small bowl, stir together the mayonnaise, ketchup, and hot sauce until smooth and well combined.
08 - Top each cheesy smash taco with thinly sliced red onion, diced tomato, shredded lettuce, pickled jalapeños, a dollop of sour cream, and a drizzle of the spicy sauce. Fold and serve immediately.