Place the cottage cheese in a 2-cup measuring cup (or other vessel that fits your immersion blender) or into a mini-food processor or small blender. Blend until smooth.
Add 1/4 cup plain Greek yogurt, 1 Tablespoon dried minced onion, 1 teaspoon onion powder, 1/2 teaspoon concentrated beef bouillon, 1/8 teaspoon garlic powder, 1/8 teaspoon ground black pepper, and 1/8 teaspoon ground black pepper. Blend until the ingredients are mixed.
Taste the dip, specifically for saltiness. Add up to 1/4 teaspoon MSG-salt or kosher salt and mix again. Taste again. If you think it still needs more salt, add in very small amounts until it tastes how you want. Cover the dip with plastic wrap or transfer to an airtight container or jar. Refrigerate for at least an hour before serving to allow the flavors to meld. Store leftovers in an airtight container in the fridge for up to a week.
Notes
As different cottage cheese brands can range in the amount of salt they contain, I recommend tasting your dip before deciding whether to add salt, or how much salt to add. The brand of cottage cheese I used is notably much lower in salt than other available brands, and 1/4 teaspoon of salt was about the right amount for me.