Easy Crockpot Beef and Green Bean Casserole Tips, FAQ & printable recipe

Tips for success

If you find that the casserole needs a bit more seasoning after the cooking is done, a small dash of black pepper or a pinch of salt can be added to taste. However, the onion soup mix is quite salty, so it is best to taste the mixture before adding any additional salt to ensure the seasoning levels remain balanced and pleasant for your palate.

For those who enjoy a bit of extra creaminess, you can stir in a small amount of sour cream or softened cream cheese during the final stirring stage. This will add a slight tang and a richer mouthfeel to the sauce. Just be sure to stir it in until fully melted and smooth before you top the dish with the crispy french fried onions and serve it immediately.

Variations

• Cheesy Beef Casserole: Stir in one cup of shredded cheddar or mozzarella cheese during the final stage of cooking until melted. This adds a rich, gooey texture that complements the savory mushroom sauce perfectly.
• Spicy Beef Variation: Add a teaspoon of red pepper flakes or a dash of your favorite hot sauce to the slow cooker along with the soup mix for a subtle kick that cuts through the richness.

Storage and make-ahead

Fridge

Store in an airtight container in the refrigerator for up to 3 days.

Freezer

Freeze in a sealed container for up to 2 months; thaw overnight in the fridge before reheating.

Reheat

Reheat in the microwave or on the stovetop until the internal temperature reaches 165°F (74°C). Add fresh onions after reheating.

Allow any leftovers to cool to room temperature, but do not leave them out for longer than two hours. Once cooled, transfer the casserole into an airtight container.

Storing it in the refrigerator helps maintain the quality of the beef and sauce for several days. Ensure the container is properly sealed to prevent the absorption of other odors from the refrigerator.

This dish is excellent for making ahead of time. You can assemble the raw ingredients in the slow cooker insert and keep it in the refrigerator for up to 24 hours before cooking.

Simply place the insert into the base and start the cooking process when you are ready. This makes it a perfect option for busy days when you want to have dinner ready to go with minimal effort.

Serving ideas

This casserole is a complete meal on its own, but it pairs beautifully with simple sides to round out the plate. A fresh, crisp green salad with a light vinaigrette provides a nice contrast to the rich, savory flavors of the beef and mushroom sauce.

Alternatively, a side of fluffy mashed potatoes or steamed rice can help soak up any extra gravy, making the meal even more filling and satisfying for your guests.

When serving, use a large spoon to ensure everyone gets a good portion of the beef, beans, and sauce. Make sure to distribute the crispy onion topping evenly across each serving to maintain the textural experience.

If you are serving a larger group, you might consider preparing a double batch, though you will need to ensure your slow cooker is large enough to accommodate the increased volume of ingredients.

Frequently asked questions

Recipe card

Easy Crockpot Beef and Green Bean Casserole

Prep 5 minCook 4 hRest 5 minTotal 4 h 10 minServes 4

Ingredients

• 1 lb ground beef
• 16 oz frozen cut green beans
• 1 packet onion soup mix
• 1 can condensed mushroom soup
• 1 cup french fried onions

Instructions

1. Place the raw ground beef at the bottom of the slow cooker insert, spreading it out evenly. Add the frozen green beans over the beef. Sprinkle the onion soup mix evenly across the beans and pour the condensed mushroom soup over the entire mixture.
2. Cover the slow cooker with the lid. Set the cooker to cook on low for 6 to 8 hours or on high for 3 to 4 hours. Ensure the ground beef reaches an internal temperature of at least 160°F (71°C) to ensure it is cooked through safely.
3. Once cooked, stir the casserole gently to combine the ingredients. Sprinkle the french fried onions over the top just before serving to maintain their crisp texture. Let the dish rest for about 5 minutes before portioning onto plates.

Contains: gluten, milk

Estimated nutrition per serving

Calories

380

Protein

22 g

Carbohydrates

18 g

Fat

24 g

Fiber

3 g

Sugar

2 g

Sodium

850 mg

Automatic estimate from the ingredient list, not laboratory-verified.