Make the pancakes: in a medium mixing bowl, mix together the flour(s), sugar, baking powder, baking soda and salt. In a liquid measuring cup, measure out the buttermilk. Beat in the egg and vanilla extract.
Roast the strawberries: preheat oven to 350 degrees Fahrenheit. Line a rimmed baking sheet with parchment paper. In a medium bowl, gently toss berries with the sugar and maple syrup/honey. Arrange the strawberries in a single layer on the baking sheet. Roast for 30 minutes, stirring halfway, or long enough for the berry juices to thicken but not burn (watch the edges in particular).