Step 1 - Build the Blender Batter
Add 1¼ cups (125g) of the oats to your blender reserve the remaining ¼ cup (25g) for later. Add the peeled banana in chunks, then the baking powder, cinnamon, salt, vanilla extract, and oil. Pour the non-dairy milk in last.
Blend on high until the batter looks smooth and slightly grainy not completely uniform like a liquid, but no large oat chunks remaining. This takes about 30–45 seconds in a high-powered blender, 60–90 seconds in a standard one. Scrape down the sides if needed and blend again.
Step 2 - Add the Reserved Oats
Add the remaining ¼ cup of whole oats to the blended batter and pulse 3–4 times. You want to break the oats up slightly without blending them smooth. These partially-whole oats add chew and texture that makes the pancakes feel more substantial and less like a protein shake in pancake form.
Let the batter rest for 3–5 minutes while you preheat the pan. The batter will thicken noticeably during this time as the oats absorb the liquid. Don't worry this is correct. Don't add more milk to thin it. The thick batter is what produces the fluffy interior.
Step 3- Preheat the Pan Properly
Add oil or vegan butter to your griddle or skillet and place it over medium-low heat. Let it preheat for 2–3 full minutes. Medium-low, not medium this is the most important instruction in the entire recipe. Oat-based pancakes need longer, slower cooking than wheat-flour pancakes. High heat burns the outside before the inside cooks through. Medium-low gives you that even, golden-brown surface and a fully set interior every time.
Step 4 - Pour, Spread, and Wait
Pour ¼ to ⅓ cup of batter per pancake into the preheated pan. The thick batter won't spread on its own use the back of your measuring cup or a spoon to gently spread it into an even circle. Sprinkle any mix-ins over the top now.
Leave the pancakes completely undisturbed for 4–5 minutes. Don't press them, don't peek underneath, don't turn up the heat because it seems like it's taking too long. Wait for bubbles to form across the surface and the edges to look set and dry before you even pick up the spatula.
Step 5 - Flip and Finish
Flip each pancake once with your thin spatula and cook the second side for 2 minutes until golden. The second side cooks faster than the first watch it more actively.
Transfer finished pancakes to a plate in a warm oven (lowest heat setting) while you cook the remaining batches. Brush the pan with a little more oil between each batch.