Cook bacon in a 375 degree oven for 10-15 minutes, until cooked through but not crisp.
While bacon is cooking, cut onions into 1 1/2 inch segments (1 onion segment per shrimp).
Remove bacon from oven; cool slightly.
Increase oven temperature to 400 degrees.
Cut bacon in half; wrap each half around one shrimp and tuck a green onion segment inside.
Secure with a toothpick.
Place shrimp on baking sheet that has been lined with foil.
Drizzle with maple syrup and bake at 400 degrees for 10 minutes or until bacon is well done.
Remove from oven; drizzle with additional maple syrup as desired.