Preheat the oven to 350F. Line an 8x8 or 9x9-inch baking dish with parchment paper.
In a high speed blender, add the eggs and cottage cheese and blend until smooth. Add 1 cup cheese, oats, scallions, and salt and Blend briefly to combine, using a tamper tool to encourage everything to mix together.
Microwave frozen veggies in 30 second increments, stirring after each time, until just thawed. Use your hands to squeeze as much water out as you can, then transfer to the blender. Blend again briefly just to combine or you can just stir them in or scatter them into the baking dish.
Pour into the prepared baking dish. Use a spoon or rubber spatula to evenly distribute the oats/veggies. Top with the remaining 1 cup of cheese.
Bake for 40-45 minutes or until the cheese is golden on top and it is cooked through/firm in the center. Let cool for at least 10 minutes before slicing. If it is a little more custardy in the very center, that is fine!