Equipment
Ingredients
Popcorn and Nuts
- 100 g popcorn kernels, dry
- 15 ml vegetable oil
- 150 g roasted salted peanuts, roasted and salted
Caramel Glaze
- 115 g unsalted butter, cubed
- 180 g light brown sugar, packed
- 75 g light corn syrup
- 20 g unsulphured molasses
- 4 g fine sea salt
- 3 g baking soda
- 5 ml pure vanilla extract
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 394 kcal
- Protein
- 6 g
- Carbohydrates
- 44 g
- Fat
- 23 g
- Fiber
- 3 g
- Sugar
- 32 g
- Sodium
- 389 mg
- Saturated Fat
- 9 g
- Potassium
- 243 mg
- Calcium
- 40 mg
- Iron
- 1.3 mg
- Magnesium
- 76 mg
- Phosphorus
- 162 mg
- Zinc
- 1.2 mg
- Vitamin A
- 101 mcg
- Vitamin C
- 0 mg
- Water
- 6 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Preheat the oven to 120°C (250°F) and line two large rimmed baking sheets with parchment paper.
Place the vegetable oil and popcorn kernels into a large heavy-bottomed stockpot with lid over medium-high heat. Cover and shake continuously once popping starts until popping slows to 2 to 3 seconds between pops, approximately 3 to 4 minutes.
Transfer the popped popcorn into an extra-large heat-proof mixing bowl, leaving any dense, unpopped kernels behind in the pot, then add the roasted salted peanuts and toss briefly to distribute.
In a medium heavy-bottomed saucepan, combine the unsalted butter, light brown sugar, light corn syrup, unsulphured molasses, and fine sea salt over medium heat, stirring with a heat-resistant silicone spatula until the butter melts and the sugar dissolves completely.
Bring the caramel syrup to an active boil without stirring, clip the candy thermometer to the side of the saucepan, and cook undisturbed until the temperature registers 121°C (250°F), which takes about 4 to 5 minutes. Caution: hot molten sugar will burn skin on contact.
Remove the saucepan immediately from the heat, add the baking soda and pure vanilla extract, and whisk vigorously with a wire whisk for 15 seconds until the mixture expands, lightens into a pale toffee color, and becomes foamy.
Immediately pour the hot foaming caramel over the bowl of popcorn and peanuts, working quickly with the heat-resistant silicone spatula to fold and coat the kernels thoroughly before the caramel sets.
Divide the caramel-coated popcorn mixture evenly between the two prepared parchment-lined rimmed baking sheets, spreading it out into an even, single layer.
Bake in the preheated oven at 120°C (250°F) for 60 minutes, using the silicone spatula to stir the popcorn and rotating the baking sheets every 15 minutes to guarantee even drying and thorough caramel distribution.
Remove the baking sheets from the oven and immediately stir to break up excessively large clusters, then leave to cool undisturbed on the parchment paper for 20 minutes until completely cool, dry, and brittle.
Chef's Notes
- Baking soda is non-negotiable in toffee and caramel corn recipes; the alkaline soda reacts with the acids in brown sugar and molasses to produce microscopic carbon dioxide bubbles, creating an aerated brittle that shatters easily without adhering tenaciously to molars.
- Baking the popcorn low and slow at 120°C (250°F) serves a dual purpose: the gentle heat briefly softens the caramel so it coats every kernel evenly, while simultaneously dehydrating the popcorn to ensure long-lasting, bone-dry crunch.
- Have your baking soda, vanilla, and spatula prepped and positioned immediately adjacent to the stove prior to boiling the syrup. Once caramel reaches 121°C (250°F), the temperature climbs rapidly and seconds dictate the difference between silky toffee and burnt sugar.
- Light corn syrup provides glucose and fructose molecules that interrupt sucrose crystallization, ensuring the caramel stays smooth and glossy rather than turning gritty.
Storage
Freezer: 2 months — Store in a rigid airtight container or heavy freezer bag. The caramel popcorn stays remarkably crisp and thaws in 10 minutes at room temperature.
Reheating: If humidity softens the caramel, spread kernels across a parchment-lined baking sheet and re-crisp in an oven preheated to 120°C (250°F) for 10 minutes, then cool completely.
Troubleshooting
Caramel corn turns chewy, tacky, or soft instead of shatteringly crisp
Cause: The corn was underbaked, caramel syrup was undercooked below 121°C (250°F), or humid room air permeated the batch before sealing
Fix: Spread the popcorn back onto parchment-lined baking sheets and bake at 120°C (250°F) for an additional 12 to 15 minutes, then cool completely
Prevention: Use a verified candy thermometer to reach 121°C (250°F) and complete the full 60-minute low-temperature bake to dehydrate all residual moisture
Caramel sauce separates into oily butter slick and hard crystallized syrup
Cause: Caramel boiled too vigorously or was agitated during boiling, causing sugar crystallization and fat breakdown
Fix: Vigorously whisk in 15ml of warm water off the heat to re-emulsify before adding the baking soda
Prevention: Allow the syrup to boil undisturbed without stirring after initial dissolution, and do not exceed medium heat
Finished snack has an acrid, burnt aftertaste
Cause: Caramel exceeded 125°C (257°F) during the boiling phase or scorched on the pan bottom
Fix: Cannot be fixed
Prevention: Remove the saucepan immediately once the thermometer registers 121°C (250°F) and use a heavy-bottomed pan for even heat dispersion
Painful unpopped kernels encountered while chewing
Cause: Popped corn was dumped straight from the popping pot without sorting out unpopped kernels
Fix: Carefully sort through the cooled clusters manually and dislodge stray unpopped kernels before serving
Prevention: Transfer popped corn into the mixing bowl by hand, leaving unpopped kernels settled at the base of the pot
Cultural Context
Molasses-glazed popcorn with roasted peanuts was created in Chicago during the late 19th century by German immigrant brothers Frederick and Louis Rueckheim, who popularized their formula at the 1893 World's Columbian Exposition. Formally branded as Cracker Jack in 1896, the treat became an indelible fixture of American sports culture after being immortalized in the 1908 baseball anthem 'Take Me Out to the Ball Game'. Today, this combination remains a timeless ballpark staple celebrated for its signature contrast of salty roasted legumes and brittle toffee glaze.
