In a large bowl, combine the flour, baking powder, sugar, cinnamon, and salt. Make a well (like a volcano) in the middle and pour in the milk, egg, melted butter, and vanilla extract. Using a for, break up the egg, then mix it with the liquid ingredients, and then combine it with the flour, working from the outside of the bowl in, until just combined and mostly smooth. Stop mixing when you no longer see flour to avoid chewy pancakes.
Add the granola:
Fold the granola into the batter and let it sit for 5 minutes.If your granola has large clusters, give them a gentle crush by hand and remove any large nuts before adding it to the bowl.
Cook the pancakes:
Heat a large pan or non-stick griddle over medium heat. Once hot, grease, spray, or melt butter on the hot surface. When using an electric griddle, heat it somewhere between 300 and 350F. If you grease it with butter and it browns, the surface is too hot.
Immediately, pour ¼ cup of batter onto the greased surface. This batter doesn't spread, so use the back of a spoon or the scoop to shape it. Cook the first side for about 2 minutes, until the edges begin to look defined and bubbles form. Flip the pancakes over and cook the second side for a little less time. Avoid pressing down on the pancake with the spatula after flipping; this will make the pancakes dense by eliminating the air pockets and/or cause the batter to ooze out on the sides and be undercooked.
Remove the cooked pancakes from the pan and repeat the process with the remaining batter, serving the pancakes as you go or keeping them warm on a sheet pan in a 200F oven.
Serve:
Plate a few granola pancakes, and top them with a little yogurt and more granola, or with your favorite toppings and syrups.
Notes
Using a pancake mix: follow the recipe in the box for 2 cups of dry mix. Combine the ingredients to make the batter, then follow the next steps in the recipe.
Adding cinnamon: if cinnamon doesn't go with your granola flavor, omit it.
If your batter is too thick, you likely added too much flour into the cup during measuring (or omitted the butter). Add 2 more tablespoons of milk to thin it, then mix gently.
If your batter is too runny, add 1 to 2 tablespoons more flour, mix gently, and wait 5 minutes before cooking.
If your pancakes are flat, your baking powder is no longer active (gone bad). This ingredient cannot be omitted.