Start by preheating your oven to 425 °F and line 1-2 baking sheets with parchment paper or a silicone baking mat. If you're making 8 larger buns, you'll only need 1 baking sheet. For more, smaller buns, prepare two baking sheets
In a large mixing bowl, stir the yeast into the warm water. Add the oil and sugar and stir again. Let the mixture sit for 5 minutes.
Next add the aquafaba, salt and 3 cups of flour and stir until a dough forms. If the dough is still too wet and sticky, continue adding dough until a soft, kneadable dough forms.
Pour the dough out onto a flour surface and knead it for a few minutes. Then immediately divide the dough into 12 equal pieces and shape each piece into a ball.
Place the balls of dough onto your lined baking sheets, leaving 2-3 inches in between each bun.
Cover the buns and allow the dough to rest for 10 minutes until risen.
Bake the buns for 8-15 minutes, depending on how many you're making, until they are baked through and golden brown on top.
Transfer the buns to a wire rack and allow them to cool completely before slicing in half and filling them with your favorite burgers and toppings!
Notes
Aquafaba is the liquid from a can of chickpeas. Simply open a can of chickpeas and measure out 3 tablespoons of the liquid straight from the can.