Set the oven to the lowest setting. Remove larger herb leaves from the stems or keep them intact if the leaves are smaller.
Lay herbs in a single layer on a baking sheet.
Bake for 30 minutes with the oven door cracked open to let moisture escape. Pro-Tip: If your oven cooks unevenly, rotate the trays.
After the first 30 minutes, check dryness. Continue in 10-minute intervals until fully dry.
Cool completely before storing.