Using a food processor, blender, or immersion blender (or even a whisk!), add all ingredients for avocado ranch, and blend until combined. Scrape sides, and blend again for 10 seconds. Set aside.
Using a skillet or griddle, cook the Gwaltney Hardwood Smoked Bacon slices according to package directions. Once cooked, set on a plate lined with a napkin and set aside.
Preheat oven to HI BROIL.
Using a 9x13 baking dish, add the bottoms of the slider buns to the dish. Spoon about 1 tsp avocado ranch onto each bun, and spread. Add a slice of lettuce, tomato, 2 slices of bacon, and then a slice of cheese on top (don't put the bun top on yet). Place into oven for 2-3 minutes, or until cheese is melted (watch carefully). Remove from oven.
Add about 1/2 tsp dollop of avocado ranch on top of the cheese, then carefully put the tops of the buns on each sandwich, then spray the tops of the buns with either non-stick oil spray, or lightly brush the tops with olive oil. Sprinkle Parmesan cheese on top. Place into oven (on broil still) and cook for 1-2 minutes, or until the tops of the buns are lightly toasted. Watch carefully because they can burn quickly. Remove from oven and serve immediately.
Store remaining ranch in the fridge and use on your favorite foods!