Preheat oven to 225 F. Spray a loaf pan with non stick spray.
Heat milk and water to 110 - 115 F. Sprinkle yeast on top and wait 5-10 minutes, until it becomes foamy.
In a large bowl, combine whole wheat flour, rye flour, oats, sugar and salt. Add seeds, but reserve 2 tablespoons. Mix to combine.
Add proofed yeast with all of the liquid. Mix until thoroughly combined.
Form into a loaf and transfer to loaf pan. Add reserved seeds on top and press into dough.
Place in oven on middle rack and bake for 25 minutes.
On bottom rack of oven, place an oven safe pot with boiling water.
Increase oven temperature to 350 F and bake for 1 hour.
Cool completely before slicing.
Notes
Traditionally, sunflower seeds would be used instead of sesame seeds and there would be no poppy seeds.
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