To freeze: Prepare through step 1, using a baking sheet lined with parchment paper; freeze until firm, 1 hour. Transfer to a resealable plastic bag; freeze up to 3 months. To bake from frozen: Place knots on a rimmed baking sheet; brush with 1 tablespoon oil. Bake at 400 degrees for 20 to 25 minutes. Proceed with step 3.