Preheat oven to 375°F and line a small individual loaf pan with parchment paper.
In a large bowl, combine the ground beef, egg, almond flour, finely diced onion, minced garlic, tomato paste, coconut aminos, sea salt, and black pepper.
Mix gently by hand until just combined, being careful not to overwork the meat to maintain a tender texture.
Transfer the mixture to the prepared loaf pan and shape into an even, compact loaf.
In a small bowl, whisk together the tomato puree, balsamic vinegar, and honey to create the savory glaze.
Brush the glaze evenly over the entire top surface of the meatloaf.
Bake for 35-40 minutes or until the internal temperature reaches 160°F and the glaze is bubbling.
Let the meatloaf rest for 5 minutes before slicing to ensure the juices redistribute perfectly.