Step 1: Preheat your oven to 375°F (190°C) for even baking.
Step 2: Grease a muffin tin with olive oil or line with paper liners to prevent sticking.
Step 3: In a large bowl, whisk together the whole wheat flour, almond flour, all-purpose flour (or oat flour), baking powder, baking soda, and salt.
Step 4: In another bowl, whisk together the buttermilk, maple syrup, eggs, olive oil, and vanilla extract until smooth.
Step 5: Pour the wet mixture into the dry ingredients and stir gently until just combined.