Ingredients
- For the bars:
- 16 16 bars
- 10 10 10 tablespoons unsalted butter, divided
- 2 2 2 cups semisweet chocolate chips
- 1 1/2 1 1/2 1/2 teaspoons flaky salt, divided
- 3 3 3 cups mini marshmallows
- 4 4 4 cups old-fashioned rolled oats
- Mix-ins (optional):
- 1/2 1/2 1/2 cup chopped, toasted nuts
- 1/2 1/2 1/2 cup chopped, dried fruit
- 1/2 1/2 1/2 cup crushed pretzels
Preparation
Step 1
Line an 8x8-inch baking pan with parchment or wax paper.
Melt 2 tablespoons of the butter and the chocolate chips in a medium microwave-safe bowl in 20-second bursts, stirring between each burst, or over a double boiler, until the chocolate is just melted. Stir together until smooth.
Transfer about 1/2 cup of the melted chocolate to a small bowl and set aside. Stir 1 teaspoon of the salt and any mix-ins into the remaining chocolate mixture; set aside
Melt the remaining 8 tablespoons of butter in a Dutch oven or large saucepan over low heat, stirring with a wooden spoon so that it melts evenly. Once the butter begins to foam, watch carefully, as it will quickly begin to brown and emit a nutty aroma. When browned, remove from the heat. Add the marshmallows and stir continuously until completely melted. Add the oats and stir until well-coated.
Transfer 1/2 of the oat mixture to the prepared pan. Using a fork, gently press the oats into an even layer. Pour the chocolate with the salt and mix-ins over the oats and spread into an even layer. Top with the remaining oats, and gently press into an even layer. Drizzle the remaining 1/2 cup of melted chocolate over the top of the oats, then sprinkle with the remaining 1/2 teaspoon salt.
Cover and refrigerate for at least 2 hours or up to overnight. When ready to serve, let sit at room temperature for about 10 minutes. Grasping the parchment or wax paper, remove the slab from the pan to a cutting board and cut into 16 pieces.
Recipe Notes:
Make ahead: The bars can be made up to 1 day in advance, covered, and stored in the refrigerator.
Storage: Store the bars in a covered container in the refrigerator for up to 4 days.
Per serving, based on 18 servings. (% daily value)
Calories 298 Fat 15.6 g (24%) Saturated 8 g (39.8%) Trans 0.3 g Carbs 39.9 g (13.3%) Fiber 3.7 g (14.9%) Sugars 17.5 g Protein 4.9 g (9.8%) Cholesterol 17 mg (5.7%) Sodium 157.4 mg (6.6%)