ROASTED CAULIFLOWER:
1 large head of cauliflower
4 tbsp. melted butter, divided
Kosher salt
Freshly ground black pepper
4 whole cloves garlic (skin-on)
4 leaves fresh sage
4 sprigs fresh thyme
4 sprigs fresh rosemary
GRAVY:
4 tbsp. butter
1/2 onion, finely chopped
4 oz. cremini mushrooms, finely chopped
1 tsp. freshly chopped sage
1 tsp. freshly chopped rosemary
1 tsp. freshly chopped thyme
3 tbsp. all-purpose flour
2 to 4 c. low-sodium vegetable broth
Preheat the oven to 450°.
Put the cauliflower in a large oven-safe skillet, rub all over with 2 tablespoons of melted butter, and season with salt and pepper. Arrange garlic and herbs around cauliflower.
Bake the cauliflower for 1 to 1 ½ hour, brushing with the remaining butter halfway through. Continue baking until it’s tender and slightly charred. (Pierce the cauliflower with a paring knife to check if it’s ready.)
MAKE GRAVY
In a small saucepan over medium heat, melt the butter. Add onion and cook, stirring until they’re soft ~5 minutes.
Stir in the mushrooms and herbs and season with salt and pepper. Cook, stirring, until the mushrooms are soft and golden, about 4 minutes.
Add 1 or 2 cloves of the roasted garlic (skins removed), breaking up cloves with a wooden spoon.
Stir in flour and cook 1 minute, then whisk in 2 cups of broth and bring mixture to a boil.
Reduce the heat to low and simmer until mixture has thickened to your desired consistency, 5 minutes. (Add more broth if desired.)
Serve the cauliflower with the gravy.