Chocolate Chip–Oat Pancakes

Instructions
=== Whisk 3/4 cup whole-wheat flour, 1/2 cup each all-purpose flour and rolled oats, 3 tablespoons brown sugar, 1 teaspoon baking powder and 1/2 teaspoon each cinnamon and salt in a large bowl. In a separate bowl, whisk 1 1/4 cups milk, 1 egg, 4 tablespoons melted butter and 1 teaspoon vanilla. Whisk the wet ingredients into the dry ingredients. Cook 1/4 cupfuls of the batter in a hot buttered skillet; sprinkle with chocolate chips before flipping. ===