Boost your breakfast with vitamin C and potassium by topping your whole-grain pancake stack with segmented oranges, which are an excellent source of both.
Whisk flour, flaxmeal, baking powder, baking soda, ginger, and salt in a large bowl.
Zest 1 orange to get 1 tablespoon zest. Juice it to get 1/4 cup juice. Cut the remaining two oranges into segments (see Tip). Cut the segments into thirds; set aside.
Whisk buttermilk, eggs, vanilla, brown sugar, oil, the orange juice, and the zest in a medium bowl.
Pour the wet mixture into the dry mixture and stir until just combined. Do not overmix. Let the batter stand for 3 to 5 minutes while you preheat the pan.
Lightly coat a large nonstick pan or griddle with cooking spray and set over medium-high heat. Drop the batter onto the hot pan, using 1/3 cup per pancake. Cook the pancakes until they begin to bubble, 3 to 4 minutes, then flip and cook the other side until lightly browned, 2 to 3 minutes more.
Repeat with the remaining batter. Keep the pancakes warm in a 200 degrees F oven until ready to eat. Serve with the reserved orange segments.