Preheat oven to 400°F.
Spread a small amount of Plant Strong Pizza Sauce evenly over the crust.
Prepare Plant Strong Black Bean Burger Mix according to the package instructions.
Drop small bite-sized clumps of prepared Burger Mix evenly over the pizza. Top with red onion and nutritional yeast, if using.
Bake for 10 minutes for a chewier crust or 12 minutes for a crispier crust, until the Burger Mix is cooked through.
Meanwhile, stir together the yogurt, mustard, pickle juice, and salt.
Remove the pizza from the oven and top with chopped pickles and shredded lettuce. Drizzle with Burger Sauce, slice, and serve.