Heat your oven to 375 degrees. Place the bacon on an aluminum foil-lined baking sheet, and bake until crispy. This will take about 15 minutes. Place the bacon on a paper towel.
While the bacon is cooking, prepare the shallots and walnuts. Slice the shallots without making them too thin. Melt 1 tablespoon of butter in a skillet over medium heat. Once melted, add the shallot.
To toast the walnuts, melt a teaspoon of butter in a skillet over medium heat. Once the butter melts add the walnuts and toss in the butter. Add the maple syrup and a sprinkle of salt, and stir.