In large bowl, mix breakfast sausage with egg, breadcrumbs, salt
and pepper until just combined. Do not overmix.
Form mixture into small, mini-sized patties.
Heat flat top or skillet over medium heat. Sear patties until
thoroughly cooked (3-4 minutes per side, depending on thickness).
In separate pan, sauté onions and peppers until soft
and caramelized.
Toast or warm mini waffles, if desired.
Assemble the sliders: Place patty on mini waffle, top with sautéed
onions and peppers, and add cheese, if desired. Finish with second
waffle as top bun and serve.