Preheat oven to 425 degrees. Melt butter in a saucepan over medium heat. Stir in sugar, and bring to a low boil. Continue boiling, stirring constantly to prevent burning, approximately 3 minutes. Arrange crackers on a cookie sheet in a single layer, and drizzle with sugar mixture and bake at 425 degrees for 5 minutes, or until edges begin to brown. Remove from oven and spread chocolate chips evenly over the top as they melt. Sprinkle with nuts, gently pressing into the melted chocolate. Cool until chocolate has hardened, and break into pieces. Store in refrigerator until ready to serve. Allow cooling, and break into pieces. Refrigerate until ready to serve.
Ready in 30 min