How to Freeze Dry Green Beans - The Fresh Milled Farmhouse

Wash & Trim: Rinse beans under cool water. Snap off stem ends and cut into 1–2 inch pieces, or leave whole if you prefer.
Blanch & Cool: Bring a pot of water to a boil. Add beans and blanch for 2–3 minutes. Drain immediately and transfer to ice water to stop cooking. Pat dry with a clean towel.
Pre-Freeze: Lay beans in a single layer on your freeze dryer trays and freeze until solid (several hours or overnight). I like to weigh out each tray, so I’m adding roughly the same amount per tray.
Run the Cycle: Load the freeze dryer, start the machine, and let it run its program. Green beans typically take 20-30 hours, depending on your load size and water content.
Test for Dryness: Remove a bean and break it in half. It should snap cleanly. If it feels leathery or cool inside, return it to the machine.
Store Immediately: Once fully dry, allow trays to cool in the machine for 20–30 minutes. Transfer beans to your storage containers of choice and label with date/contents.

Blanch first: This helps beans keep their bright green color and flavor.
Pre-freeze: To cut down on freeze dryer time.
Cut evenly: Snap beans into uniform lengths so they dry consistently.
Test dryness: Fully freeze-dried beans should snap when broken, not bend.
Store properly: Use storage bags or glass jars for short-term storage, or Mylar bags with oxygen absorbers for long-term storage. Check out my free printable mylar bag storage chart to know exactly what size absorber to use.