Cook bacon in oven that's been preheated to 400°F/200⁰C for 20-22 minutes, or until golden. Let cool, then crumble into pieces; set aside.
Turn oven temperature down to 300°F/150⁰C.
Preheat oven to 350° and grease an 9-x-5" loaf pan. Cut each biscuit in half to create 16 rounds. Mix melted butter with 1 tablespoon maple syrup. Brush on both sides of each biscuit round.
In a medium bowl, combine both sugars and the salt. Coat each biscuit in the sugar mixture, tapping off excess.
Make your stack: onto one biscuit, sprinkle a handful crumbled bacon and cover with another biscuit. Repeat this process until all bacon and biscuits are used, ending on a biscuit.
Place your biscuit stacks into the loaf pan on their sides, so the layers stand upright. If you have any extra maple butter, brush the top of the loaf.
Bake until biscuits are puffy and golden, about 40 minutes. Let cool slightly and remove from pan.
While cooling, make the glaze: In a medium bowl, whisk milk and maple syrup into powdered sugar until smooth. Drizzle over warm loaf and serve.
Notes
Store in airtight container in refrigerator up to three days.