In a large bowl mix patty ingredients. Place a large layer of parchment paper on the countertop. Add half of the tortillas in a single layer. Using a 2oz food scoop, place a portion of patty mix to center of each tortilla. Cover with another layer of parchment paper. Use a burger press (or small frying pan) to flatten out each scoop of patty mixture on to each tortilla. Repeat with remaining tortillas. **Meat should be pressed all the way to the edge , and even over hanging. It will shrink up while cooking.
In a large saute pan over medium-high heat, add bacon. Cook until crispy and remove to paper towel covered plate. Allow to cool some before chopping into bites. Reserve 2 tablespoons of bacon grease in the pan.
In a small bowl, combine special sauce ingredients.
Begin frying patty/tortilla, patty side down, in same pan bacon was fried in. Cook for approximately 3 minutes on patty side, then flip and cook for 2 minutes on tortilla side. Add slice of cheese and remove from pan. Repeat with remaining smashtacos.
Add portion of bacon to smashtaco. Sprinkle with romaine, tomato and onion. Drizzle with special sauce. Repeat with remaining smashtacos.