Preheat the oven to 350°F (180°C) fan. Grease the doughnut pan if it's not made out of silicone.
In a large mixing bowl, combine the oat flour, rice flour, ground flax seeds, baking soda, and salt.
Add in the yogurt, hummus, apple cider vinegar, and oil. With a spatula, start stirring at the center and gradually incorporate the flour from the edges (see step-by-step pictures).
Transfer the batter into a piping bag to easily pipe it into the doughnut pan (see notes). Alternatively, use a spoon.
Wet your fingers with plant-based milk and gently brush the top of the bagels. Top with mixed seeds.
Bake the bagels for 25 minutes or until a tester comes out clean.
Let them cool down completely before slicing them open. The texture improves as they cool down.
Video
Notes
If time allows, make these bagels ahead of time as the texture is best when the bagels have cooled.
Tips to fill the piping bag: place it over a tall glass and fold it over the edges of the glass. No need to add a pastry tip. Using a tablespoon or a spatula, fill the piping bag until it's half full. Squeeze out any air bubbles, twist the top and cut off the end. Make a relatively large opening.
To make sweet bagels, replace the hummus with unsweetened applesauce and the apple cider vinegar with lemon juice. Don't add water. You can add 2 teaspoons of cinnamon and a handful of raisins, chocolate chips or blueberries.
To toast your bagels, cut them in half and toast them in a preheated oven (at 400°C, 200°C) or in your toaster.
Storage tips: you can store the bagels in an airtight container at room temperature for 2 days. Then, move them to the fridge for 1 extra day. Slice them open shortly before topping.
Freezing tips: cut the bagels open and wrap them in plastic wrap or place them in a zip bag (or sustainable alternative). If using a zip bag, squeeze out the air. No need to defrost them to eat them. Pop them in the oven at 350°F (180°C) for 10 minutes or in the toaster right away.