Fresh or frozen green beans may be prepared in a Crock-Pot or any type of slow cooker unit. Check the green beans doneness by poking them with a fork. Remove them from the slow cooker once they reach the desired tenderness. Fresh green beans take approximately four to six hours when cooked on low, and two to three hours when cooked on high heat in a slow cooker. Frozen green beans need less time to cook; in some casserole recipes, you may need to add them to the slow cooker toward the end of cooking time.
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Onion is a staple flavoring to use when preparing green beans in a slow cooker. Green bean casserole recipes use green beans, mushrooms and French-fried onions. Diced onions may also be tossed with green beans before you prepare them in a slow cooker. You may also sprinkle onion powder in with the green beans prior to heating them.
Dry seasonings to try with green beans in a slow cooker include garlic powder, dill seed, celery seed, parsley, basil and oregano. Since you need to add water or another type of liquid to cook the green beans, it may dilute the seasonings, so you should increase the amounts of seasonings you normally use in other recipes.
Add salt and pepper to taste when preparing green beans in a slow cooker. For 2 lb. of green beans, use approximately 1 tbsp. of salt and 2 tbsp. of pepper. Seasoned salt, table salt or garlic salt are varieties you may use. Fresh ground pepper or seasoned pepper is your option for seasoning green beans.
If you are using a dairy product as part of your recipe, choose heavy cream. According to Cook’sCountry.com, this is the only dairy product that did not curdle during several hours in the slow cooker. Although you may sprinkle onions on top of the beans before serving them, the flavor will be stronger if you add the onions during the heating process.