Place all dry ingredients in a bowl and whisk to combine.
Gradually add the egg, yogurt, milk, and oil, whisking until smooth.
Pour the batter into a preheated waffle maker and cook until golden brown.
Serve with fruit, whipped cream, honey, maple syrup, or your favorite toppings.
Notes
Store leftovers in the fridge for 1–2 days and reheat before serving, but note they will no longer be as crispy.
For a savory version, omit the sugar and vanilla and serve with savory toppings (grated cheese, cottage cheese, sour cream, vegetables, cooked eggs, etc).