Lightly toast 2 slices sourdough (just partially toast them because they'll be heated again once assembled).
In a medium bowl, stir together ½ cup cottage cheese, 2 Tbsp shredded sharp cheddar cheese, ¼ to ½ jalapeno (finely diced, ribs and seeds removed), 2 Tbsp finely diced red onion, and 1 pinch salt and pepper. Use more or less jalapeno depending on heat preference.
Spoon mixture evenly onto toast. Optionally top each with a bit more shredded cheese.
Set oven or air fryer to 'broil' and cook for 2 to 3 minutes, watching closely, until cheese is melted and beginning to turn golden brown.
Finish with fresh cracked black pepper and enjoy!
