Preheat oven to 425 degrees then line a baking sheet with foil and spray with nonstick spray. Set aside.
Add egg, salsa, bread crumbs, hummus (if using), taco seasoning, and cheese cubes to a large bowl then stir with a fork to combine. Crumble ground beef on top then use your hands to mix until just combined.
Divide mixture into four portion then shape each portion into a loaf and place on prepared baking sheet. Bake for 18-20 minutes, or until cooked through, then serve.
Notes
Prepare ahead of tine: prepare the mini meatloaves up to a day ahead of time. Place on prepared baking sheet then cover tightly with saran wrap and refrigerate. Let the baking sheet with the mini meatloaves sit on the counter and come to room temperature for 20 minutes or so before baking.