
Cheesy broccoli and cauliflower casserole
Roasted broccoli and cauliflower folded into a creamy cheddar sauce and baked until bubbling, with golden edges on top.
- 55 min total
- 20 min hands-on
- Anyone can make this
- Serves 6
- About $2.28 a serving
- 450 calories
- Good the next day
- Vegetarian
- Gluten-free

Dolly says: Make the full amount. It’s just as good for lunch the next day.
Ingredients
For 6 servings.
- 2 heads broccoli
- 1 head cauliflower
- 2 tbsp butter
- 2 cups milk, cold
- 4 oz cream cheese
- 2 cups shredded cheddar, divided
- ½ tsp ground mustard
- ½ cup grated parmesan
From your pantry
- 2 tbsp olive oil
- 1¼ tsp salt, divided
- 2 tbsp cornstarch
- ½ tsp garlic powder
- ¼ tsp black pepper
Each serving has about 450 calories, 20 g protein, 22 g carbs and 32 g fat, and costs about $2.28 at typical US grocery prices. Both are estimates from what the recipe uses.
Missing something?
- No broccoli? Frozen broccoli works.
- No butter? Ghee works.
- No milk? Half-and-half works.
- No shredded cheddar? Cheddar cheese or Mexican blend cheese or Monterey Jack cheese works.
- No grated parmesan? Parmesan wedge works.
Steps
Tap an underlined word for a quick explanation.
the oven to 425°F. Cut the broccoli and cauliflower into bite-size florets and them on a large with the oil and ½ teaspoon salt.
Preheat. Preheating means turning the oven on before you start, so it’s fully hot when the food goes in. Food that starts in a cold oven cooks unevenly and doesn’t brown the same.
How you’ll know: The oven beeps or its light clicks off, usually 10 to 15 minutes after you turn it on.
Toss. Tossing means gently lifting and turning food so everything gets coated, like pasta in sauce or vegetables in oil. It coats every piece evenly without mashing anything.
How you’ll know: Every piece looks glossy or evenly coated, with no dry spots hiding underneath.
Sheet pan. A sheet pan is a flat metal baking tray with a low rim all the way around. The rim catches juices, and the wide surface lets food spread out and brown.
How you’ll know: Everything fits in one layer with a little space between the pieces.
until with a few edges, about 15 minutes. Turn the oven down to 375°F.
Roast. Roasting means cooking in a hot oven, around 400°F to 450°F, usually spread out on a sheet pan. The dry heat browns the outside and brings out sweetness, especially in vegetables.
How you’ll know: The edges are browned and a little crisp, and a fork slides easily into the thickest piece.
Tender-crisp. Tender-crisp means vegetables cooked until just tender but still with a little snap. They keep their bright color and crunch instead of going soft and dull.
How you’ll know: A fork goes in with slight resistance, and the color is bright, not olive or gray.
Brown. Browning means cooking until the outside turns brown, which is where a lot of savory flavor comes from. Give food room and time without stirring, or it steams and stays gray.
How you’ll know: The food looks brown rather than gray, and the kitchen smells toasty and savory.
Timer: 15 min
Meanwhile, the cornstarch into the cold milk. the butter in a over medium heat, pour in the milk and whisk until it bubbles and , 3 to 4 minutes.
Whisk. Whisking means beating quickly with a whisk or a fork to blend things together. It smooths out lumps and mixes eggs, oil or sauces evenly.
How you’ll know: It all looks one even color and texture, with no streaks or lumps.
Melt. Melting means gently heating something solid, like butter or cheese, until it turns liquid. Low or medium heat keeps it from browning or burning.
How you’ll know: It’s smooth and liquid, and butter may foam a little but hasn’t turned brown.
Saucepan. A saucepan is a pot with tall, straight sides and one long handle. It’s for things that need depth, like rice, sauces or a few boiled eggs.
How you’ll know: The food fills it about halfway, leaving room to bubble without spilling over.
Thicken. Thickening means cooking a sauce or soup until it’s less runny, by simmering it down or adding something like cornstarch. A thicker sauce clings to food instead of pooling on the plate.
How you’ll know: It coats the back of a spoon, and a line drawn through it with your finger holds its shape.
Medium heatTimer: 4 min
Off the heat, in the cream cheese, 1½ cups cheddar, the garlic powder, mustard, pepper and ¾ teaspoon salt until smooth.
Whisk. Whisking means beating quickly with a whisk or a fork to blend things together. It smooths out lumps and mixes eggs, oil or sauces evenly.
How you’ll know: It all looks one even color and texture, with no streaks or lumps.
Tip the vegetables into a 9x13-inch baking dish, pour the sauce over and stir gently to coat.
Roast. Roasting means cooking in a hot oven, around 400°F to 450°F, usually spread out on a sheet pan. The dry heat browns the outside and brings out sweetness, especially in vegetables.
How you’ll know: The edges are browned and a little crisp, and a fork slides easily into the thickest piece.
Sprinkle the rest of the cheddar and the parmesan over the top and until bubbling and , 20 to 25 minutes.
Bake. Baking means cooking in the oven with dry heat all around the food. It cooks evenly from every side, so you can mostly leave it alone.
How you’ll know: It’s golden on top and passes the recipe’s check, like a clean toothpick or the right temperature.
Golden brown. Golden brown is the color of good toast, somewhere between yellow and light brown. It means the outside is cooked and crisp but not burnt.
How you’ll know: It looks like toast and smells toasty; dark brown with a bitter smell means it went too far.
Timer: 22 min
Dolly’s tip: Make it ahead: assemble, cover and chill up to 2 days, then add 10 minutes to the bake.

Plan this in Dollop, and get the grocery list
Dollop puts this dinner on a night that suits your week, lists only what you still need to buy, and walks you through each step while you cook.
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