First Step: Prepare your workspace Line an 8×8-inch pan with parchment paper to prevent sticking. Gather all ingredients, measuring chocolate chips, mini marshmallows, and toasted nuts. Chop any additional mix-ins if desired.

Second Step: Melt the chocolate In a microwave-safe bowl, combine 3 cups dark chocolate chips with 2 tablespoons olive oil. Microwave in 30-second intervals, stirring after each, until smooth and glossy. Alternatively, melt over a double boiler on low heat to avoid burning.

Third Step: Mix in marshmallows and nuts Transfer melted chocolate to a large mixing bowl. Gently fold in 3 cups mini marshmallows and 1 cup toasted walnuts or your choice of nuts (almonds, cashews, peanuts, etc.). Ensure all pieces are coated evenly with chocolate.

Fourth Step: Spread mixture and chill Spread the candy mixture evenly into the prepared pan, pressing lightly for even thickness. Refrigerate for 2 to 3 hours or until fully set and firm.

Final Step: Cut and serve Once firm, remove from pan using parchment edges and cut into bite-sized squares or logs. Store in an airtight container. For dietary needs, swap ingredients accordingly during the mixing stage to accommodate vegan or gluten-free lifestyles.