Prep Station → Slice mushrooms, cut cauliflower small, grate Parmesan—set blender nearby for quick transfer.
Dry Sauté → Heat large skillet high; add mushrooms in one layer—no oil—cook 4 minutes until liquid evaporates.
Golden Depth → Drizzle olive oil; add garlic and thyme—sauté 2 minutes until edges crisp and fragrant.
Steam Cauliflower → In separate pot, steam florets 8 minutes until fork-tender (or microwave with water 5 min).
Reserve Liquid → Scoop ¼ cup mushroom liquid before draining skillet—flavor gold for blending.
Blend Base → Transfer mushrooms, cauliflower, broth, reserved liquid to blender—pulse until chunky.
Creamy Finish → Add yogurt, Parmesan, nutmeg—blend high 60 seconds until silk-smooth (vent lid).
Season Perfect → Taste and adjust salt/pepper—sauce should coat spoon thickly.
Thin to Cling → Return to skillet over low; stir in splashes pasta water until perfect nappé.
Serve Luxe → Toss with hot pasta or ladle over veggies—finish with extra Parm and thyme.