Keto Peanut Brittle
Linda Larue
Four pantry staples come together on the stovetop to make golden, salty-sweet keto peanut brittle. Cooking the butter and sweetener until deep brown gives the cooled roasted peanut sheet a crisp, buttery snap.
Prep Time 5 minutes mins
Cook Time 10 minutes mins
Chilling Time 30 minutes mins
Total Time 45 minutes mins
Course Snack
Cuisine American
Servings 4 servings
Calories 316 kcal
Cookie sheet
Parchment paper
Small saucepan
- 1 cup Roasted & Salted Peanuts
- 2 ounces Butter
- 3 ounces Swerve
- 1 teaspoon Vanilla Essence
Cover a cookie sheet with parchment and arrange the peanuts across it in an even layer. Leave the nuts distributed rather than piled together so the coating can reach them evenly.
Heat the butter, sweetener, and vanilla essence together in a small saucepan over medium-high heat. The butter will melt into a glossy mixture that begins to foam as it heats.
Continue cooking until the mixture develops a deep brown caramel color. A pale tan appearance means it needs more cooking and may otherwise cool into grainy candy.
Cover the prepared peanuts with the hot caramel and allow approximately 30–50 minutes for complete cooling. The coating should change from glossy liquid to a firm sheet before you handle it.
Snap the hardened sheet into serving pieces. Ready brittle breaks into distinct shards rather than bending or pulling apart.
Doneness cue: Watch the foaming mixture shift from pale yellow and tan to deep brown with a toasted, nutty aroma. Stopping while it is pale tan can leave the cooled candy sandy and grainy.
Pan tip: A light-colored metal saucepan makes it much easier to see the color shift from tan to deep brown, and lining your cookie sheet with parchment before turning on the stove prevents sticking.
Ingredient tip: Powdered sweetener has smaller particles to help reduce initial grittiness, and you can grind a granular erythritol-based sweetener in a clean coffee grinder or spice mill.
Storage: Let the brittle cool completely before placing it in an airtight container with parchment between layers in a cool, dry place away from heat and steam. Refrigeration is not needed to set this batch.
Nutrition information is an estimate based on common ingredients and serving sizes. Values may vary depending on brands, portions, and substitutions.
Keyword keto peanut brittle, low carb candy, sugar free peanut brittle