Caramel Sauce

Directions

• Step 1

  If using nuts, toast them in a small dry skillet over low heat, stirring constantly, until fragrant, 2 to 3 minutes. Transfer to a small bowl and set aside.

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• Step 2

  Combine sugar and water in a 2-quart heavy saucepan and bring to a boil over medium-high heat, stirring occasionally to dissolve sugar. Once the mixture starts boiling, cook without stirring until syrup turns amber, 5 to 10 minutes.

• Step 3

  Remove from heat and carefully pour in coffee. (Stand back, as caramel may sputter.) Let stand for 2 minutes. Return to low heat and whisk until caramel has dissolved. Remove from heat.

• Step 4

  Swirl butter into caramel mixture. Gradually whisk in milk. Stir in vanilla and toasted nuts, if using. Let cool.