Broccoli Cauliflower Alfredo Casserole

Broccoli cauliflower alfredo casserole is a cheesy holiday side dish that the whole family will love. Roasted broccoli and cauliflower are baked in a cheesy, velvety alfredo sauce that pairs beautifully with roasted meats and is something a bit different on your holiday table.
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It’s three weeks until Thanksgiving. How did time fly by so quickly? I haven’t put the Halloween decorations away yet! Well, when reality hit me in the face, I knew it was time to break out the recipe book and start planning this year’s Thanksgiving dinner.
I want to include dishes that are familiar to my family, but not something that we have often during the year. Vegetable side dishes are their least favorite, so I wanted to add a rich, decadent veggie dish that wows them and is something they actually want to eat.
- Fresh veggies instead of frozen – using fresh vegetables will produce a perfectly tender texture after its cooked. Frozen has a tendency to be a little mushy.
- Each item is seasoned – the broccoli, cauliflower, and sauce are all seasoned separately before being combined. This adds layers of flavor that combine together in the casserole for a depth and complexity that is addictive.
- Roast the vegetables instead of steaming, microwaving, or boiling them. Roasting broccoli and cauliflower adds a depth of flavor and brings out a sweetness that other methods can’t do.
- Homemade alfredo sauce, not the jarred stuff – and using heavy cream and freshly grated Parmesan for the best flavor. Grating the cheese yourself rather than buying it pre-grated will produce the creamiest sauce. Pregrated cheeses have a coating on them to prevent clumping which adds a grittiness to the cheese when melted.
- Fresh broccoli and cauliflower florets
- Olive oil
- Garlic
- Salt and pepper
- Nutmeg
- Butter
- Heavy cream
- Italian seasoning
- Parmesan cheese
- Toss the broccoli and cauliflower florets with olive oil, garlic, salt, and pepper.
- Roast the vegetables in the oven until tender-crisp.
- Make the alfredo sauce by melting the butter and simmering it with the heavy cream.
- Whisk in the seasonings and parmesan cheese until the cheese is melted.
- Simmer the sauce until thickened.
- Toss the vegetables with the alfredo sauce.
- Spoon the mixture into a casserole dish and bake until the vegetables are tender and the sauce is bubbly and golden.
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Broccoli Cauliflower Alfredo Casserole
Recipe details
Ingredients
For the roasted broccoli:
- 1 head broccoli florets
- 3 tablespoons olive oil
- 3 large garlic cloves, finely minced
- ½ teaspoon salt
- ¼ teaspoon pepper
For the roasted cauliflower:
- 1 small head of cauliflower, separated into large florets.
- 2 tablespoons olive oil
- 2 large garlic cloves, very finely minced
- ½ teaspoon salt
- ¼ teaspoon pepper
For the alfredo sauce:
- ½ cup butter, room temperature (MUST use butter, not margarine)
- 1 ½ cups heavy whipping cream
- 2 teaspoons finely minced garlic
- ½ teaspoon Italian seasoning
- ½ teaspoon salt
- ¼ teaspoon pepper
- 2 cups freshly grated Parmesan cheese
- Pinch freshly grated nutmeg

Comments
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Looks amazing, l can’t wait to try this! Thank you for sharing it.
Where are the instructions on how to make this dish?