Mix together whole wheat flour through salt. Pour hot water and melted butter over top and stir until smooth.
Mix in all purpose flour and transfer to a clean surface for kneading. Use just enough extra flour so that the dough doesn't stick to your hands or the counter. Knead for 2-3 minutes or until smooth. Set in a warm place for 20 minutes. (I set mine on top of the stove while the oven preheats).
Cut dough into 4 portions. Work with a single portion at a time, press it out into a 8 inch wide oval.
Top with a quarter of the broccoli (a large half cup), and ¼ cup cheddar. Sprinkle with red pepper flake and fold the pocket up like an envelope. Set seam side down on a parchment lined baking sheet. Repeat with remaining dough and filling.
Mix together mustard and milk. Brush evenly over the top of the pockets.
Bake in the preheated oven for 10-12 minutes, or until golden.
Notes
Serve with a side dish to make this recipe 4 servings.
Recipe by Alison's Allspice at https://www.alisonsallspice.com/broccoli-cheddar-hand-pockets/