1large head cauliflowerleaves trimmed but kept whole
Kosher salt
Dijon-Dill Cream
1/3cupmayonnaise
2Tbspsour cream
1 1/2TbspDijon mustard
1small garlic cloveminced
1tspfinely grated lemon zest
1tspfresh lemon juice
1/4tspfreshly cracked black pepper
Pinchkosher salt
Cheese Crust
1cupshredded Havarti
1/4cupfinely grated Parmesan
Buttery Dill Breadcrumbs
1/2cupfresh sourdough breadcrumbs or panko
1 1/2Tbspunsalted butter
Pinchkosher salt
1Tbspfinely chopped fresh dill
For Finishing
Fresh dill
Lemon zest
Flaky salt
Lemon wedges
Method
Instructions
Steam the cauliflower.
Bring a few inches of well-salted water to a simmer in a large pot fitted with a steamer basket. Add the whole cauliflower, cover, and steam for about 8–12 minutes, until a paring knife can penetrate the cauliflower but still meets some resistance.
You don't want it completely tender yet—it will continue cooking in the oven.
Dry it well.
Transfer the cauliflower to a sheet pan or baking dish and leave uncovered for 10 minutes. Meanwhile, heat the oven to 450°F.
This drying period is important; otherwise the steam trapped on the surface dilutes the Dijon cream and makes it harder for the cheese to brown.
Make the Dijon-dill cream.
Combine the mayonnaise, sour cream, Dijon, garlic, lemon zest, lemon juice, dill, pepper, and a small pinch of salt.
Taste it. It should be quite tangy and well seasoned since the mild cauliflower and Havarti will soften the flavors.
Coat the cauliflower.
Generously spread the Dijon-dill cream over the entire cauliflower, working a little into the crevices.
Mix the Havarti and Parmesan together, then press the cheese all over the coated cauliflower.
Roast
Roast for 15–20 minutes, until the cauliflower is completely tender and the Havarti is melted and bubbling.
Turn the broiler on for the final 1–3 minutes to develop deeply browned, blistered patches across the cheese.
Make the crispy breadcrumbs.
While the cauliflower roasts, melt the butter in a skillet over medium-low heat. Add the breadcrumbs and a pinch of salt and cook, stirring frequently, until deeply golden and crisp.
Remove from the heat and stir in the fresh dill.
Finish
Transfer the whole cauliflower to a serving platter. Scatter the buttery dill breadcrumbs over the top, followed by fresh dill, finely grated lemon zest, and a little flaky salt.
Serve with lemon wedges and cut the cauliflower into thick wedges at the table.