Cook tater tots per package instructions until golden and crispy. Cool slightly.
Season beef patties with salt and pepper. Pan-fry over medium heat for 3-4 mins per side.
In the last minute of cooking, top each patty with a cheese slice to melt slightly.
Place a tater tot as the base, add mayo, lettuce, a cheesy beef patty, a tomato slice, a pickle slice, and another tater tot.
Secure each mini burger with a toothpick to hold it together.
Serve immediately with ketchup and mustard on the side for dipping.