Heat oven to 400 degrees F. Grease muffin cups or use paper liners.
Mix flours and pecans in a large bowl. Put egg yolks, milk, maple syrup and melted butter into a medium size bowl. Put egg whites into another bowl. Beat with an electric mixer at high speed until soft peaks form. Add sugar 1 T. at a time, beating well after each addition. Whites should be glossy, very white and form stiff peaks.
Use the same beaters to beat the milk mixture until well blended. Pour milk mixture over dry ingredients and fold in until dry ingredients are fairly well moistened. Scrape the egg whites over the top and fold in gently, just until blended.
Fill cups almost to the top with batter. Bake about 20 minutes until lightly browned. Cool in pan about 10 minutes.