Whisk together the flour, sugar, baking powder, apple pie spice and salt in a large bowl. Whisk together the buttermilk and eggs in a medium bowl until well blended and then whisk in the melted butter, vanilla and mashed banana. Pour the buttermilk mixture into the flour mixture and stir until just combined with a few lumps. Set aside for 10 minutes.
Preheat the oven to 200 degrees F. Preheat a waffle iron to medium-high. Lightly brush the top and bottom of the waffle iron with butter.
Fill each waffle indent about three-quarters full. Close the lid gently and cook until the waffle is golden brown and crisp, 5 to 7 minutes. Repeat with additional butter and the remaining batter, keeping the cooked waffles warm in the oven until ready to serve.
Serve the waffles topped with warmed honey, sliced banana and chopped peanuts.
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When measuring flour, we spoon it into a dry measuring cup and level off the excess. (Scooping directly from the bag compacts the flour, resulting in dry baked goods.)