Wash the beans: Rinse under cool water to remove dirt or debris. Pat them dry with a towel.
Trim the ends: Snap or cut off the stem ends. Cut into 2–4 inch pieces if desired, or leave whole.
Blanch the beans (optional but recommended): Bring a pot of water to a boil. Add beans and cook for 2–3 minutes until bright green and crisp-tender. Transfer immediately to a bowl of ice water for the same amount of time.
Drain and dry: Spread beans out on a towel or tray to dry completely before freezing.
Flash freeze: Arrange beans in a single layer on a baking sheet. Freeze for about 1 hour until firm.
Pack for storage: Transfer to freezer bags or containers. Press out excess air, flatten the bags, and label with the date.
Freeze and store: Keep in the freezer up to 12 months if blanched or 3–4 months if frozen raw.
Use from frozen: Cook beans straight from frozen. Perfect for soups, stir-fries, casseroles, or as a simple side dish.