In a large mixing bowl, whisk together the all-purpose flour, whole wheat flour, granulated sugar, baking powder, salt, and wheat germ.
In another bowl, whisk together the milk, vegetable oil, eggs, and vanilla extract. If you prefer a thinner batter, feel free to add up to ¼ cup more milk.
Pour the wet ingredients into the bowl with the dry ingredients. Gently stir until just combined.
Preheat your non-stick skillet or griddle over medium heat. Lightly grease the surface if desired.
Pour about ¼ cup of batter onto the heated skillet for each pancake. Cook until bubbles form on the surface and edges look set, about 2 to 3 minutes. Flip and cook until golden brown, about 1 to 2 minutes.
Serve warm, topped with your favorite toppings such as maple syrup, fresh fruits, or yogurt.