Preheat your oven to 400°F (200°C) and grease a mini donut pan with cooking spray or oil.
If you don't have a mini donut pan, you can also use a muffin pan or shape the rings by hand on a baking sheet lined with parchment paper.
Feel free to customize the flavor of your onionless rings by adding spices or herbs to the batter. Garlic powder, paprika, or even dried herbs like oregano or thyme can add a delicious twist. For an extra crispy texture, you can also try coating the rings with crushed pork rinds or almond flour before baking.
These keto onionless rings are best enjoyed fresh out of the oven, but you can also store any leftovers in an airtight container in the refrigerator and reheat them in the oven or air fryer for a few minutes.