HEAT oven to 325ºF.
BRING 1 cup maple syrup and water to boil in medium saucepan on medium heat. Add nuts; cook 3 min., stirring occasionally. Drain.
MIX remaining maple syrup, sugars and liquid smoke in medium bowl. Add nuts and bacon bits; toss to coat. Spread onto parchment-covered rimmed baking sheet.
BAKE 10 min.; stir. Reduce oven temperature to 300ºF. Bake 18 to 20 min. or until nuts are crisp and lightly browned, stirring after 10 min. Cool.