4-Ingredient Broccoli Radcliffe Casserole – An Old-Fashioned Holiday Potluck Favorite
My uncle started making this Broccoli Radcliffe Casserole for holiday season potlucks back in 1982, and it quickly became one of those family recipes everyone looked forward to. He would bring it to gatherings in a simple glass baking dish, and somehow, no matter how much food was on the table, this casserole was always scraped spotless before the main course was even sliced!
There is something special about an old-fashioned casserole made with just a few simple ingredients. This 4-Ingredient Broccoli Radcliffe Casserole combines tender broccoli, creamy condensed mushroom soup, mayonnaise, and plenty of shredded cheddar cheese to create a rich, bubbly side dish with a deliciously cheesy finish.
Every bite is creamy, savory, and comforting. The broccoli stays tender while the cheddar melts into the creamy sauce, creating the kind of homemade flavor that makes people reach for another serving. Best of all, you don’t need complicated techniques, expensive ingredients, or hours in the kitchen.
Whether you’re preparing a Thanksgiving side dish, bringing something to a church supper, planning a Christmas potluck, or simply looking for an easy vegetable casserole for Sunday dinner, this nostalgic broccoli casserole deserves a place at your table.
Why You’ll Love This Broccoli Radcliffe Casserole
– Only 4 simple ingredients: Everything comes together with everyday grocery staples.
– Perfectly creamy texture: Condensed cream of mushroom soup and mayonnaise create a rich, smooth sauce.
– Plenty of melted cheddar: Cheese adds savory flavor and a golden, bubbly finish.
– Easy holiday side dish: It’s a wonderful addition to Thanksgiving, Christmas, and family gatherings.
– Make-ahead friendly: Assemble it ahead of time and bake when you’re ready.
– Family-approved comfort food: This is the kind of old-fashioned recipe that gets requested again and again.
Ingredients for 4-Ingredient Broccoli Radcliffe Casserole
You only need four ingredients to make this comforting oven-baked broccoli casserole.
1. Frozen Chopped Broccoli (2 packages, 10 ounces each)
Frozen chopped broccoli makes this recipe especially convenient. It provides tender vegetable pieces throughout the casserole and saves you the time of washing and chopping fresh broccoli. Thawing and draining the broccoli before mixing is important because excess water can make the finished casserole too thin.
2. Condensed Cream of Mushroom Soup (1 can, 10 3/4 ounces)
This pantry staple is the foundation of the creamy casserole sauce. It adds rich mushroom flavor, savory depth, and a smooth consistency that brings all the ingredients together. Because the soup is already condensed, there’s no need to add extra liquid.
3. Mayonnaise (1 cup)
Mayonnaise gives the casserole its signature creamy texture and adds a subtle tangy richness. It blends with the mushroom soup to create a velvety coating that keeps the broccoli moist and flavorful as it bakes.
4. Shredded Cheddar Cheese (2 cups)
Cheddar cheese brings everything together with its familiar sharp, savory flavor. Most of the cheese melts into the broccoli mixture, while the remaining portion creates a delicious cheesy topping that turns lightly golden in the oven. Sharp cheddar is especially good if you enjoy a stronger cheese flavor.
How to Make Broccoli Radcliffe Casserole
This easy 4-ingredient broccoli casserole requires only a few minutes of preparation before the oven does the rest.
Step 1: Prepare the Oven and Baking Dish
Preheat your oven to 350°F (175°C). Lightly grease a medium-sized glass casserole dish with butter or cooking spray to prevent sticking and make serving easier.
Step 2: Thaw and Drain the Broccoli
Make sure both packages of frozen chopped broccoli are completely thawed. Drain away all excess water, then gently press the broccoli with paper towels or a clean kitchen towel.
This step is especially important because too much moisture can affect the consistency of the creamy sauce.
Step 3: Mix the Creamy Casserole Filling
In a large mixing bowl, combine the drained broccoli, condensed cream of mushroom soup, mayonnaise, and 1 1/2 cups of shredded cheddar cheese.
Stir everything together until the broccoli is evenly coated and the cheese is distributed throughout the mixture.
Step 4: Fill the Casserole Dish
Transfer the broccoli mixture into your prepared baking dish. Spread it into an even layer using a spatula.
Sprinkle the remaining 1/2 cup of shredded cheddar cheese evenly over the top. This creates that irresistible cheesy layer as the casserole bakes.
Step 5: Bake Until Hot and Bubbly
Place the casserole in the preheated oven and bake uncovered for 30–35 minutes.
The casserole is ready when the edges are bubbling, the cheese has melted, and the top looks lightly golden.
Step 6: Rest and Serve
Remove the casserole from the oven and allow it to rest for 5–10 minutes before serving.
This short resting period helps the creamy filling settle slightly, making it easier to scoop neat portions.
Serve warm and enjoy every cheesy bite!
Pro Tips for the Best Broccoli Radcliffe Casserole
Drain the broccoli thoroughly. This is the most important trick for achieving a thick, creamy casserole instead of a watery one. Pressing the thawed broccoli gently with a clean towel makes a noticeable difference.
Use freshly shredded cheddar. Block cheddar grated at home generally melts more smoothly than pre-shredded cheese, which often contains anti-caking ingredients.
Choose sharp cheddar for extra flavor. Its stronger taste balances the richness of the mayonnaise and cream of mushroom soup.
Don’t overbake. Once the casserole is bubbling around the edges and the cheese is melted, it’s ready. Baking too long can dry out the edges.
Let it rest before serving. Giving the casserole a few minutes to settle makes serving easier and helps the creamy filling hold together.
Prepare it ahead of time. Assemble the casserole, cover it, and refrigerate for up to 24 hours before baking. For food safety, keep it refrigerated until ready to bake. Allow a little additional baking time if it is still cold from the refrigerator, and check that the center reaches 165°F.
Easy Variations to Try
Although the original recipe is delicious with just four ingredients, you can customize it depending on what you have available.
– Add a crunchy topping: Sprinkle buttered cracker crumbs or crispy fried onions over the casserole during the last 10 minutes of baking.
– Use fresh broccoli: Substitute fresh broccoli florets that have been lightly steamed or blanched and thoroughly drained.
– Try another cheese: Colby-Jack, mild cheddar, or a cheddar blend can all work beautifully.
– Add extra seasoning: A little black pepper, garlic powder, or onion powder can enhance the savory flavor.
– Make it extra cheesy: Add a little more cheddar if you prefer a richer cheese layer.
These additions are optional and are not included in the original four-ingredient version.
What to Serve with Broccoli Radcliffe Casserole
This creamy broccoli casserole is a versatile side dish that pairs beautifully with traditional family dinners.
Here are some delicious serving ideas:
– Holiday main dishes: Serve alongside baked ham, roasted turkey, or glazed pork loin.
– Sunday dinner favorites: Pair it with roast chicken, meatloaf, or oven-baked pork chops.
– Comfort-food sides: Add mashed potatoes, homemade stuffing, buttered dinner rolls, or roasted carrots.
– Fresh accompaniments: A crisp green salad, coleslaw, or sliced tomatoes balances the richness of the casserole.
– Potluck favorites: Bring it alongside deviled eggs, green bean casserole, macaroni salad, and other classic dishes.
For a simple family meal, serve a generous scoop with roasted chicken and warm dinner rolls. It’s an easy combination that feels like a proper homemade dinner.
How to Store and Reheat Leftovers
If you’re lucky enough to have leftovers, this casserole is easy to store and enjoy later.
Refrigerator: Transfer leftovers to an airtight container and refrigerate within two hours of serving. Enjoy within 3–4 days.
Reheating: Place individual portions in the microwave and heat until thoroughly warmed. For larger portions, cover the casserole with foil and reheat in a 325°F oven until the center reaches 165°F.
Freezing: You can freeze the baked casserole in a freezer-safe container, although the mayonnaise-based sauce may separate slightly after thawing. For the best texture, enjoy it fresh or refrigerated.
Frequently Asked Questions
Can I make broccoli Radcliffe casserole ahead of time?
Yes! Assemble the casserole up to 24 hours ahead, cover it, and refrigerate. Bake when needed, allowing extra time if it is cold.
Do I need to cook the frozen broccoli first?
No separate cooking is necessary. Simply thaw and drain the frozen chopped broccoli thoroughly before mixing it with the other ingredients.
Can I use fresh broccoli instead of frozen?
Absolutely. Lightly steam or blanch fresh broccoli until just tender-crisp, then drain it well before adding it to the creamy mixture.
Why is my broccoli casserole watery?
Excess moisture from the broccoli is usually the reason. Make sure the broccoli is completely thawed and well drained before combining it with the soup and mayonnaise.
Can I use a different kind of cheese?
Yes. Colby-Jack and mild cheddar are good alternatives, although sharp cheddar provides a more pronounced flavor.
How do I know when the casserole is done?
Look for bubbling around the edges, melted cheese, and a lightly golden top. The center should be thoroughly heated to 165°F.
A Classic Family Recipe Worth Keeping
Some recipes become family favorites because they’re complicated and impressive. Others become treasured traditions because they’re wonderfully simple and always taste delicious.
This 4-Ingredient Broccoli Radcliffe Casserole belongs in the second category. With tender broccoli, creamy mushroom sauce, mayonnaise, and melted cheddar cheese, it delivers everything you want in an old-fashioned comfort-food side dish without making a mess of the kitchen.
It’s perfect for holiday potlucks, Thanksgiving dinner, Christmas gatherings, church suppers, and everyday family meals. And just like my uncle’s version from 1982, don’t be surprised when everyone comes back for another helping.
Sometimes the simplest recipes are the ones families remember forever!