This old fashioned slow cooker green bean and chicken casserole takes a holiday favorite and turns it into an easy weeknight dinner.

Tender chicken breasts cook low and slow beneath layers of creamy sauce, savory stuffing, and green beans. By the time it is ready, everything is rich, thick, and full of flavor, no oven needed.
It reminds me of the way Grandma loved to turn classic casseroles into hearty, one dish meals that could feed everyone without much fuss.
What You Need to Know
- This casserole cooks fully in the slow cooker
- The chicken becomes fall apart tender as it simmers
- Green beans are added near the end so they keep their texture
- Crispy onions add that classic finishing touch

Ingredients Overview
- Boneless skinless chicken breasts: Cook until tender and easy to shred
- Garlic salt, onion powder, and paprika: Simple seasoning that keeps it familiar
- Chicken broth: Helps soften the stuffing and keep everything moist
- Chicken stuffing mix: Adds hearty texture and flavor
- Chicken gravy: Makes the casserole rich and savory
- Sour cream: Adds creaminess
- Cream of mushroom soup: Classic casserole base
- Frozen green beans: Easy and convenient, added at the end
- Crispy fried onions: The perfect crunchy topping
How to Make Old Fashioned Slow Cooker Green Bean and Chicken Casserole
Step 1: Spray an 8 quart slow cooker with nonstick cooking spray. Place the chicken breasts in the bottom and season evenly with garlic salt, onion powder, and paprika.

Step 2: In a large bowl, combine the chicken broth, stuffing mix, and chicken gravy. Stir until well mixed, then spread the mixture evenly over the chicken.
Step 3: In a medium bowl, stir together the sour cream and cream of mushroom soup. Spread this mixture evenly over the stuffing layer.

Step 4: Cover and cook on Low for 5 to 6 hours. During the last hour of cooking, add the frozen green beans and gently spread them around the casserole.
Step 5: Scoop and serve warm, topping each portion with crispy fried onions if desired.
Grandma’s Tips
- Layering the casserole keeps everything cooking evenly
- Adding the green beans at the end prevents them from getting mushy
Modern Updates
- Use turkey gravy or turkey stuffing for a holiday style twist
- Canned green beans work too, just drain them very well
More Old Fashioned Crock Pot Recipes
- Slow Cooker Salisbury Steak with Mushroom Gravy
- Slow Cooker Beef Stew
- Old Fashioned Slow Cooker Creamed Corn
- Easy Slow Cooker Spareribs

FAQs
When should green beans be added to a slow cooker casserole?
Adding green beans during the last hour helps them stay tender without becoming too soft.
Can this casserole be cooked on High?
Yes, it can be cooked on High for about 3 to 4 hours instead of Low.
How long does green bean and chicken casserole last in the refrigerator?
Stored in an airtight container, leftovers will keep for 2 to 3 days.


Grandma's Slow Cooker Green Bean and Chicken Casserole
Ingredients
Method
- Spray slow cooker and place chicken in the bottom. Season with garlic salt, onion powder, and paprika.
- Mix broth, stuffing, and gravy and spread over chicken.
- Stir together sour cream and cream of mushroom soup and spread on top.
- Cook on Low for 5 to 6 hours. Add green beans during the last hour.
- Serve topped with crispy fried onions.
Notes
- Cook on High for 3 to 4 hours if short on time
- Turkey gravy or stuffing can be used instead
- Drain canned green beans very well if using
- Store leftovers in the refrigerator for up to 3 days
Tried this recipe?
Let us know how it was!





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