Preheat Oven: Set your oven to 200°F (93°C).

Slice Oranges: Cut oranges into thin, even slices using a sharp serrated knife or mandoline slicer. Thinner slices will dry faster, while thicker slices create a bold, rustic look.

Blot Excess Moisture: Pat both sides of the sliced oranges with paper towels to remove extra moisture, which will speed up the drying process.

Arrange on Baking Sheet: Lay the slices in a single layer on a parchment-lined baking sheet. If you want to speed up the drying process, place a cooling rack on top of the parchment paper, then place the orange slices on the cooling rack.

Bake and Flip: Place the baking sheet in the oven for 2-3 hours. Flip the orange slices every 30 to 45 minutes to ensure even drying. If you're drying two sheets at a time, rotate the pans for uniform heat distribution.

Check for Doneness: The oranges are ready when the flesh of the orange is translucent, and the rinds are dry and shiny. If they still feel soft, continue drying in 15-minute increments.

Cool and Store: Let the slices cool completely on a wire rack. You can store them in an airtight container if you're not assembling the garland right away.

Thread the Garland: Use a yarn needle to poke two small holes near the top of each dried orange slice. Thread clear fishing line, string, or yarn through the holes, and space the slices evenly.

Decorate: Optionally, thread in cinnamon sticks, pine cones, or wooden beads for extra holiday charm.