📖 Instructions

1. **Prepare Your Station:** Lightly grease a large baking sheet or a silicone mat (my personal go-to for easy removal!) and set it aside. This step is super important, you don't wanna be scrambling when the hot sugar is ready. Have all your ingredients measured and ready to go by the stove, because once things get hot, they move fast!
2. **Combine Sugar and Syrup:** In a heavy-bottomed 3-quart saucepan, combine the granulated sugar, light corn syrup, and water. Stir these together over medium heat until the sugar completely dissolves. This might take a few minutes, just be patient. Don't let it boil before the sugar is dissolved, or you might get a grainy texture.
3. **Bring to a Boil (and Beyond):** Once the sugar is dissolved, stop stirring. Bring the mixture to a rolling boil. Continue to cook, without stirring, until a candy thermometer registers 250°F (121°C). This is the 'soft crack' stage, and it's where we start building that brittle structure.
4. **Add Peanuts and Butter:** Carefully stir in the raw peanuts and butter. The mixture will seize up a bit, but keep stirring. Continue cooking, stirring constantly, until the mixture reaches 300°F (149°C) – this is the 'hard crack' stage. Keep a close eye on it; it can go from perfect to burnt pretty quickly!
5. **Off the Heat Magic:** Immediately remove the saucepan from the heat. Quickly stir in the baking soda and vanilla extract. The mixture will foam up and lighten in color; this is exactly what you want! The baking soda creates tiny air bubbles, which give the brittle its characteristic light, crunchy texture and that beautiful gloss. Don't overmix, just enough to combine.
6. **Pour and Spread:** Immediately and carefully pour the hot brittle mixture onto your prepared baking sheet or silicone mat. Using a heat-resistant spatula or the back of a greased spoon, spread the brittle into a thin, even layer. Work quickly but carefully; it sets very fast!
7. **Cool Completely:** Let the peanut brittle cool completely at room temperature. This will take at least 30-60 minutes, maybe even longer depending on your kitchen's temperature. Resist the urge to touch or taste it until it's fully cool! Cooling slowly is key for that perfect snap.
8. **Break and Store:** Once completely cool and hard, break the brittle into irregular pieces. You can tap it with the back of a heavy spoon or your hand. Store the peanut brittle in an airtight container at room temperature. Layer pieces with parchment paper if you're worried about sticking. It'll stay fresh for a couple of weeks, though I doubt it'll last that long!