Preheat the oven to 450º. Rinse the potatoes. Add the potatoes to a large pot. Add enough water to cover potatoes by about 2 inches.
Bring to a boil over high heat. Boil for about 20 minutes or until the potatoes are tender enough to pierce easily with a fork.
Drain the potatoes. Let them cool for a minute so they are easier to handle. Gently smash them with a glass jar on a well oiled, rimmed cooking sheet. They can touch and overlap a bit. Drizzle with leftover oil (1 tsp)
You might have some leftover potatoes, you can cook a second sheet of smashed potatoes, or enjoy them as a snack.
Roast potatoes, flip them after 25 minutes, until crispy and browned. Cook for another 30 to 35 minutes. Let cool slightly. Make the dressing while they are roasting.
Make the dressing. Add the ingredients into a food processor or blender and blitz. Give it a taste and adjust if desired. You can add 1 tbsp water if you want to thin out the sauce.
Mix up the salad! Toss the potatoes with the 3/4ths of the dressing, bacon, chopped veggies, cheese, any other garnish drizzle some more buffalo sauce and extra dressing if desired and enjoy!