Directions

• Step 1

  Heat oil over medium-high heat in a large, deep saute pan until shimmering.

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• Step 2

  Add broccoli, then onion; saute, stirring very little at first, then more frequently, until vegetables start to turn golden brown, 7 to 8 minutes.

• Step 3

  Reduce heat to low and add butter, sugar and garlic; continue cooking until all vegetables are a rich spotty caramel color, about 10 minutes longer.

• Step 4

  Add mustard, basil, oregano, and cayenne pepper; continue to saute until fragrant, 30 seconds to 1 minute longer.

• Step 5

  Add broth; bring to a simmer over medium-high heat. Reduce heat to low and simmer, partially covered, until broccoli is tender, about 10 minutes.

• Step 6

  Using an immersion blender or traditional blender, puree until very smooth, 30 seconds to 1 minute. (If using a traditional blender, vent it either by removing the lid's pop-out center or by lifting one edge of the lid. Drape the blender canister with a kitchen towel. To 'clean' the canister, pour in a little half-and-half, blend briefly, then add to the soup.)

• Step 7

  Return to pan (or a soup pot); add enough half-and-half so the mixture is souplike, yet thick enough to float garnish. Taste, and add salt and pepper if needed. Heat through, ladle into bowls, garnish and serve.