In a medium bowl, stir together the flour, brown sugar, baking powder and salt. Pour in the milk, oil, egg and vanilla, and mix until well blended. Stir in the strawberries.
Heat a large skillet or griddle over medium heat, and coat with butter or cooking spray. Pour batter into desired size of pancakes. Flip with a spatula when bubbles appear in the center. Cook until golden brown on the other side.
