In a large mixing bowl, combine the boiling water, oats, sugar, honey, butter, salt, and cinnamon. Stir and let cool to lukewarm (100°F to 110°F), about 10 to 15 minutes
Add the yeast and flours, stirring to form a rough dough. Knead (about 10 minutes by hand, 5 to 7 minutes by machine) until the dough is smooth and satiny.
Transfer the dough to a lightly greased round bowl, cover the bowl with lightly greased plastic wrap, and allow the dough to rise for 1 hour.
Punch down dough and shape into a boule, cover with plastic wrap again and let it rest for another 60 minutes.
When waiting for the dough to proof, prepare a piece of parchment paper larger than the dutch oven. Next, cut out 4 lengths of kitchen twine, measuring approx 15 to 20 inches each.
Then, lay them on top of the parchment paper to create a criss cross pattern. The twine will give the bread the pretty pumpkin like shape when baked.
When ready, carefully transfer the dough directly on top of the prepared twines.
Tie the twines loosely. Cut off the excess bits. Adjust the twines so that the sections are approximately equal in size.
Apply eggwash to the bread. Next, score each section of the bread in the pattern that you like. Preheat the oven to 350°F.
Holding the parchment paper, transfer the dough into the dutch oven, cover and bake for 40 minutes. Remove lid and bake for another 5-10 minutes until the top is golden and internal temp measures 190°F.
Remove from oven, place on cooling rack. Snip off twine and the bread is ready!