Preheat oven to 350°F.
Combine wet ingredients and dry ingredients in separate bowls. Be sure to break up any chunks in the brown sugar.
Make a well in the bowl of dry ingredients and add the wet ingredients. Mix together until combined. Do not overmix.
Grease loaf pan or line with parchment paper for easy removal.
Add to loaf pan and top with pumpkin seeds, if you wish. Bake about an hour, until a toothpick/fork comes out clean when you poke the center of the loaf.
To prepare glaze, whisk together instant coffee and butter. Then whisk in powdered sugar.
When loaf cools, top with glaze. Serve when the glaze has set!