Preheat the oven to 450 degrees and place a rack at the highest position, near the top.
Blend the cottage cheese until smooth.
Place blended cottage cheese in a bowl; mix with the flour, baking powder and salt until a dough starts to come together.
Turn it out on the counter and give it a few squishes, coating with a bit of extra flour, to make it into a cohesive ball.
Place a sheet of parchment on a pizza pan or baking sheet. Place the dough on the parchment and press into a circle that is about 10-12 inches in diameter.
Rub the top of the crust with olive oil.
Place in the oven; bake (no toppings) for 8-10 minutes.
Remove from oven. Spread with sauce and top with the two cheeses. Bake on that same top rack for another 5 minutes to melt the cheeses.
Finally, broil for 2-3 minutes until the cheese and crust edges are deeply golden.
