Step 1: Toast the Pecans: Preheat oven to 350F (175C). Spread pecan halves on a baking sheet in a single layer. Toast in the preheated oven for 8-10 minutes, or until fragrant and lightly browned. Allow the pecans to cool slightly, then coarsely chop.
Step 2: Brown the Butter: In a medium saucepan over medium heat, melt the butter. Continue cooking, swirling occasionally, until the butter turns golden brown and emits a nutty aroma. This process usually takes 3-5 minutes. Be careful not to burn the butter. Remove from heat and set aside to cool slightly.
Step 3: Create the Ice Cream Base: In a large bowl, whisk together the heavy cream, whole milk, granulated sugar, brown sugar, and salt until the sugars are dissolved.
Step 4: Incorporate Flavors: Stir in the cooled browned butter and vanilla extract into the cream mixture.
Step 5: Chill the Base: Cover the bowl with plastic wrap, pressing it directly onto the surface of the mixture to prevent a skin from forming. Refrigerate for at least 4 hours, or preferably overnight, to allow the flavors to meld.
Step 6: Churn the Ice Cream: Pour the chilled ice cream base into an ice cream maker and churn according to the manufacturer's instructions. This typically takes 20-25 minutes.
Step 7: Add the Pecans: During the last few minutes of churning, add the toasted and chopped pecans to the ice cream maker. This ensures they are evenly distributed throughout the ice cream.
Step 8: Harden the Ice Cream (Optional): Transfer the churned ice cream to an airtight container and freeze for at least 2 hours to harden to a scoopable consistency.
Optional Tips: For a deeper butter flavor, use salted butter and omit the salt from the recipe. A tablespoon of bourbon can be added to the ice cream base for an adult twist. If you do not have an ice cream maker, the mixture can be placed in a freezer-safe container and stirred every 30 minutes for 2-3 hours to break up ice crystals.