In a medium bowl, combine your white whole wheat flour, oats (you can grind in a food processor ahead of time if desired, but certainly not required), brown sugar, baking powder, baking soda and salt.: When the dry ingredients are whisked together you should notice a uniform pale tan color dotted with oat flecks, and a faint sweet scent from the brown sugar . This step is important because it evenly distributes the baking powder and baking soda , which prevents lumpy pockets of leavening that can create uneven rise. If you skip thorough mixing, some pancakes may puff more than others. A common mistake is over stirring the dry mix into the wet later, so keep these dry ingredients well blended now so you can combine gently later.
In a separate bowl, mix together your egg, buttermilk, vanilla and oil.: As you whisk the egg into the buttermilk , the mixture will look smooth and slightly frothy, with a faint tang from the buttermilk . Adding the vanilla and canola oil gives a glossy sheen to the batter and carries aroma. This wet mixture ensures the liquids are evenly flavored and emulsified before they meet the dry mix. Avoid using cold ingredients straight from the fridge, because very cold wet ingredients can slow the chemical reaction of the leaveners and yield denser pancakes.
Combine your wet and dry ingredients until just mixed (do not over mix).: When you fold the wet into the dry, aim for a shaggy batter with visible streaks of flour that disappear with a few gentle stirs; small lumps are fine. The texture should be thick but spoonable, not thin and runny. Over mixing activates gluten in the white whole wheat flour and will make the pancakes tough rather than tender. If you overwork the batter, the pancakes lose lightness, so stir until the ingredients are incorporated and stop.
Heat a skilled or griddle to a medium low heat. Spray lightly with cooking spray.: You want the surface warm enough to make a gentle sizzle but not so hot that the outsides burn before the centers cook. At medium low heat you will get that comforting sizzling sound without aggressive browning, and the aroma of toasting oats will begin to fill the air. A common error is cooking too hot which causes dark exterior and undercooked middles. Adjust the heat if pancakes are browning too fast.
Spoon batter into skillet (I use a large cookie scoop) and spread out batter into a circle.: As you drop batter onto the griddle it should hold its shape, slowly spreading to a neat circle. The surface will show tiny bubbles forming as it begins to cook, and the edges will firm up. Using a scoop creates uniformly sized pancakes so they cook evenly. Pressing the batter down aggressively will make them dense, so let the batter spread naturally for the best lift.
If using chocolate chips, sprinkle a few on top of pancake prior to flipping.: When you add chocolate chips they create glossy little domes that melt into decadent pockets. The chips should slightly sink into the warm surface but still be visible, so you get those chocolate bites in each pancake. A frequent slip is adding too many chips which can weigh the pancake down, so use them sparingly to preserve structure.
Cook for 1-2 minutes until the edges start to dry and appear lightly brown. When you can slip the spatula under the pancake with ease, it's ready to flip.: Watch for the edges to transition from glossy batter to matte, and for small bubbles to pop on the surface. The sound will change from steady sizzling to a softer hiss. These visual and auditory cues tell you the underside has set and the interior has begun to cook. Flipping too early will result in a batter that falls apart, while flipping too late leads to overly dark edges.
Flip and cook second side of pancake for 1-2 minutes. Pancakes will be fairly solid and easily moved when done.: After flipping, you should see a golden brown underside and smell a nutty, toasted aroma. The second side cooks faster, so keep an eye on color and use a thin spatula to feel for springiness, which signals doneness. A common mistake is leaving them on too long which dries the interior out, so remove them when they bounce back slightly and look set.
Pancakes can be served immediately, but also store well in the fridge or freezer. Let cool completely before adding to a freezer style bag to store.: Cooling is crucial to prevent condensation which can make pancakes soggy in storage; once cool they stack neatly and reheat with retained texture. When reheating from frozen, use a low oven or toaster to warm through and revive crisp edges. People often try to freeze them while warm which traps steam and ruins the texture, so resist that temptation and cool fully before packing.