Whisk together pancake mix, milk, egg, vanilla extract, and maple syrup until smooth, then let the batter rest for 5 minutes.
Cook the bacon in a large skillet over medium heat until crispy, about 6 to 8 minutes per side, then drain on paper towels and break into slider-sized pieces.
Heat a non-stick griddle or large skillet over medium-low heat and pour small amounts of batter to form mini pancakes about 3 inches in diameter.
Cook pancakes until bubbles form on the surface and edges are set, about 2 to 3 minutes, then flip and cook until golden brown, 1 to 2 minutes more.
Melt honey and softened butter together in a small saucepan over low heat, whisking until smooth to create the honey butter drizzle.
Assemble sliders by layering one mini pancake, crispy bacon pieces, and another mini pancake. Drizzle generously with warm honey butter.
Serve immediately, garnished with fresh berries and a dollop of whipped cream if desired.