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Bowl of Honeycomb toffee.
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4.56 from 9 votes

Honeycomb Toffee (Sponge Toffee) Recipe

Honeycomb Toffee (Sponge Toffee) is a crisp, airy homemade candy with a deep caramel flavor and signature bubbly interior. Break it into rustic pieces or dip it in chocolate for an irresistible sweet treat.
Prep Time5 minutes
Cook Time10 minutes
Inactive Time2 hours
Total Time2 hours 15 minutes
Course: Candy, Snacks
Cuisine: North American
Keyword: candy, Halloween, homemade candy, Snacks
Servings: 48 pieces
Calories: 109kcal
Author: Tara Noland

Ingredients

  • 2 1/2 cups granulated sugar
  • 2/3 cup white corn syrup
  • 1/3 cup water
  • 4 tsp. baking soda
  • 2 tsp. vanilla

Instructions

  • Spray an 8x11" pan with cooking spray and line with parchment paper. Set aside.
  • Place sugar, water, and white corn syrup in a 12-cup or 3 L saucepan over medium heat and cook, stirring, until the sugar dissolves.
  • Bring to a boil, and cook without stirring. Brush down the crystals on the sides with a pastry brush dipped in cold water. Cook until the hard crack stage of 300F, or when 1 tsp. is dropped into water it forms hard brittle threads, about 10 min.
  • Remove from the heat and, being very careful, add baking soda. Add it all at once and quickly stir with a whisk. It will increase dramatically, but just keep whisking; add the vanilla in now. Don't over-stir at this point.
  • Working quickly, pour toffee into the prepared pan. Let cool without disturbing until completely cool, about 2 hours. Break into pieces.
  • Make ahead, store in an airtight container between layers of waxed paper for 1 week.

Notes

See the post for more information, photos or tips. 

Nutrition

Serving: 1 | Calories: 109kcal | Carbohydrates: 28g | Sodium: 216mg | Sugar: 28g