Preheat your oven to 375°F (190°C). Grease a large 9×13 inch baking dish with non-stick spray or a little olive oil. If you are using ground beef, brown it in a skillet over medium heat until no pink remains, then drain the excess fat. If using chicken, ensure it is already cooked and shredded. Slice your squash and dice your onions so everything is ready to assemble.

In a large skillet, heat the olive oil over medium-high heat. Add the sliced squash and onions. Sauté for about 5 to 7 minutes until the vegetables are slightly tender but still firm. Add the minced garlic during the last minute of cooking. In a large mixing bowl, combine the sautéed vegetables, your chosen meat (chicken or beef), Greek yogurt, oregano, paprika, and 1 cup of the shredded cheese. Stir until everything is well-coated.

Transfer the mixture into your prepared baking dish, spreading it out evenly. Sprinkle the remaining 1 cup of cheese and the almond flour or cracker crumbs over the top. Place the dish in the center rack of the oven and bake for 25 to 30 minutes. You want the cheese to be melted and the top to be golden and crispy. Remove from the oven and let it sit for 5 minutes before serving to allow the juices to set.