The fresh apples will keep 3-6 months when stored in a cool, dry, and dark place.Avoid storing your apples near onion or potatoes. They'll readily absorb the flavor of other foods and could ripen prematurely.
Store your apples in a cool basement, garage, shed, fruit cellar or refrigerator. The ideal storage temperature is 30-32°F with 90 percent humidity. Apples are likely to suffer freeze damage if the temperature dips below 30°; and will ripen quickly, if the temperature rises above 40°, so do your best to match these conditions.

Granny Smith apples are often used in baking because of their high acidity and ability to hold their shape when cooked. Try baked into sweet or savory pies, tarts, or meat pastries; add to savory bread stuffing, risotto or potato pancakes. Their sweet-tart flavor is a great addition to soups, smoothies and sauces. Because they are slow to brown when cut, they are perfect diced and added to fresh preparations such as salads and salsas or sliced and paired with cheese.

Granny Smith apples are high in cell repairing antioxidants. They are also a good source of soluble fiber, which has been proven to help lower cholesterol, control weight, and regulate blood sugar. Granny Smith apples contain vitamins A and C, as well as a trace amount of iron, most of which is located in their skin.