Mix almond milk and vinegar to create a vegan buttermilk in a long shallow dish (like a baking dish). Set aside.
Slice onions into about ½ inch thick circles. Place onions in the buttermilk. Soak for at least 10 minutes but the longer the better.
Preheat oven to 450.
Combine ½ cup of the buttermilk mixture with the almond flour to form a batter and mix well. Place into a bowl or shallow dish.
Combine crispy coating ingredients in a bowl or shallow dish and set aside.
One by one, dip onion slices in batter mixture and coat well.
Then dip them in the crispy coating mixture. I like to use one hand for each so it doesn’t get the coating wet and clumpy
Place the slices on parchment lined baking sheets.
Bake for 10-12 minutes, depending on thickness, then flip the onion rings and bake another 10-12 minutes. You don’t have to flip them if you prefer, but it’s best for even crispness.
Serve!
Notes
To try this nut free, sub ground up seeds for the almond flour in the coating. For the batter use another flour.
You can skip the buttermilk soak but it helps cut the sharp flavor from the onions and brings out the sweetness. If you skip, just add ½ cup milk with 1 teaspoon vinegar to the batter.
You will have leftover crispy coating and batter, but it makes coating the onions easier if you have more than needed.
Nutrition facts don't include the full batter and coating since you don't use it all, it includes about half.