Preheat oven to 375° Fahrenheit. Adjust oven rack if needed so pan will sit in center of oven. Line 13x18 half sheet pan with parchment paper and set aside.
Add 1 cup full-fat cottage cheese, 2 large eggs, ½ teaspoon salt, and 1 teaspoon dried oregano to food processor or high-speed blender. Process or blend ingredients, pausing to scrape down sides of container as needed, until ingredients are fully combined into completely smooth mixture.
Transfer mixture to lined sheet pan, pouring mixture directly onto center of parchment paper. Spread mixture out into evenly-thick rectangle, approximately 8x10 in size. Be careful not to make rectangle too thin - mixture should not cover entire pan.
Place sheet pan in center of preheated oven. Bake flatbread mixture 25 to 30 minutes or until flatbread is fully cooked-through in center and golden brown around edges.
Carefully remove sheet pan from oven. Remove parchment paper with flatbread from sheet pan and set aside. Let flatbread cool 5 minutes.
To Serve
Top one half of flatbread with preferred sandwich ingredients. Fold other half of flatbread over ingredients to cover, then cut sandwich in half. Serve and enjoy!
Recipe Notes
Cottage Cheese: Low-fat cottage cheese will work, but I personally prefer the taste and texture of the flatbread made with full-fat cottage cheese.
Moisture: If your cottage cheese contains a lot of excess liquid, drain it through cheesecloth or a coffee filter first. Too much moisture can keep the flatbread from setting completely.
Leftovers: The taste and texture are best when the flatbread is fresh, but you can make it ahead of time or save some for later. Let the flatbread cool completely, then refrigerate it in airtight container up to 3 days. Enjoy cold or reheated in the oven until just warmed through.