Cheddar Bay Green Bean Casserole is a fresh twist on a classic side dish, packed with crisp green beans, creamy cheddar sauce, and that famous buttery garlic biscuit topping that everyone loves. It’s a mix of crunchy, cheesy, and comforting all in one dish, perfect for bringing some excitement to your usual dinner table.
I love making this casserole because it feels like the best parts of a holiday side and a simple everyday meal rolled into one. The cheddar sauce is rich but not too heavy, and topping it with those garlicky biscuit crumbs adds a wonderful crunch that keeps you coming back for more. Plus, it’s super easy to throw together, which makes it a go-to whenever I’m short on time but still want something tasty.
My favorite way to serve this is alongside some roasted chicken or a juicy steak — it’s like the perfect partner that brings out the best in the main dish without stealing the show. And honestly, it’s a hit with kids and adults alike, so it’s become a family favorite whenever I want to make sure everyone at the table leaves happy and full.
Key Ingredients & Substitutions
Green Beans: Fresh green beans give you the best crunch and color here. If you’re short on time, frozen green beans work too—just thaw and pat dry before using.
Cheddar Cheese: Sharp cheddar adds bold flavor. If you prefer a milder taste or can’t find sharp cheddar, mild cheddar or a mix of cheddar and Monterey Jack works nicely.
Butter & Garlic Biscuits: Butter is essential for that rich, flavorful sauce. For the topping, you can substitute crushed buttery garlic biscuits with buttery crackers or even crushed Ritz crackers mixed with a little garlic powder.
Milk & Chicken Broth: Whole milk creates a creamy sauce, but you can use 2% or plant-based milk like oat or almond for a lighter or dairy-free option (though this may change the texture slightly). Use vegetable broth instead of chicken broth to keep it vegetarian.
How Do I Make a Smooth, Thick Cheese Sauce Without Lumps?
Making the cheese sauce can feel tricky, but these steps help keep it smooth and creamy:
- Start by sautéing garlic and onion in butter—this flavors the sauce.
- Sprinkle flour evenly over the butter mixture and stir well for 1-2 minutes to cook off the raw flour taste.
- Gradually add the milk and broth in small amounts while whisking constantly to avoid lumps.
- Keep stirring as the sauce cooks until it thickens—this could take 3-5 minutes.
- Remove from heat, then stir in cheeses slowly, mixing well to melt them evenly.
Patience and constant stirring are key. If the sauce is too thick, add a splash of milk or broth to loosen it up before mixing in the green beans.
Equipment You’ll Need
- Large pot – I use this to blanch the green beans so they stay crisp and bright green.
- Skillet or saucepan – perfect for making the cheese sauce and softening garlic and onions.
- Whisk – helps mix the milk and cornflour smoothly without lumps.
- Casserole dish – a 2-quart size works well for baking and serving this dish.
- Measuring cups and spoons – to keep everything precise and easy.
- Mixing spoon – for combining ingredients and stirring as it cooks.
Flavor Variations & Add-Ins
- Swap green beans for sliced zucchini or broccoli florets for variety and added nutrients.
- Add cooked bacon or pancetta to give it a smoky, salty kick.
- Mix in sautéed mushrooms or caramelized onions for extra flavor.
- Use a different cheese mix, like mozzarella or Gruyère, to change the taste and meltiness.
How to Make Cheddar Bay Green Bean Casserole
Ingredients You’ll Need:
Fresh Vegetables & Dairy:
- 1 lb fresh green beans, trimmed and cut into 2-inch pieces
- 2 tbsp butter
- 2 cloves garlic, minced
- 1/4 cup finely chopped onion
- 1 cup whole milk
- 1 cup sharp cheddar cheese, shredded
- 1/2 cup Parmesan cheese, grated
Other Ingredients:
- 2 tbsp all-purpose flour
- 1/2 cup chicken broth
- 1/2 tsp salt
- 1/4 tsp black pepper
- 1/4 tsp smoked paprika (optional)
- 1 cup crushed buttery garlic biscuits or crackers (for topping)
- Fresh thyme or parsley for garnish (optional)
Time Needed
This casserole takes about 10 minutes to prep and 20-25 minutes to bake, so about 35 minutes total. You’ll blanch the green beans quickly, make a creamy cheese sauce, combine everything, and bake until golden and bubbly. Easy and rewarding!
Step-by-Step Instructions:
1. Prepare the Green Beans:
Preheat your oven to 350°F (175°C). Fill a large pot with salted water and bring it to a boil. Add the trimmed green beans and cook for 3-4 minutes until they’re bright green and just tender. Drain and immediately rinse with cold water to stop the cooking. Set aside.
2. Make the Cheese Sauce:
In a large skillet over medium heat, melt the butter. Add the minced garlic and chopped onion, sautéing until fragrant and soft, about 3-4 minutes. Sprinkle the flour over the mixture and stir well for 1-2 minutes to cook the flour. Gradually whisk in the milk and chicken broth, stirring constantly until the sauce thickens, about 3-5 minutes. Remove from heat and stir in the cheddar cheese, Parmesan cheese, salt, pepper, and smoked paprika (if using). Mix until smooth and creamy.
3. Assemble and Bake:
Add the blanched green beans to the cheese sauce, stirring to coat evenly. Pour everything into a greased casserole dish. Sprinkle the crushed garlic biscuits or crackers evenly on top for a crunchy finish. Bake in the oven for 20-25 minutes, until the topping is golden brown and casserole is bubbling around the edges. Let rest for 5 minutes before serving, then garnish with fresh thyme or parsley if you like.
Can I Use Frozen Green Beans Instead of Fresh?
Yes! Just thaw the frozen green beans completely and pat them dry before adding. This helps prevent extra moisture from making the casserole watery.
Can I Make This Casserole Ahead of Time?
Absolutely! Prepare the casserole up to the baking step, then cover and refrigerate for up to 24 hours. When ready, bake it straight from the fridge—just add a few extra minutes to the baking time.
How Should I Store Leftovers?
Cool the casserole completely, then store leftovers in an airtight container in the fridge for up to 3 days. Reheat gently in the oven or microwave, adding a splash of milk if needed to keep it creamy.
What Can I Substitute for the Garlic Biscuit Topping?
You can use crushed butter crackers, panko breadcrumbs mixed with melted butter, or even crispy fried onions to get that tasty crunch on top.
