1. Preheat oven to 375 degrees.Unroll crescent roll dough, and seal the perforations by pressing them together.
2. Cut the dough into 18 squares, and press each square into a mini muffin tin cup.
3. Cut the rind off the brie cheese with a sharp knife, and cut into small chunks.
4. Place a chunk inside the dough in each cup and top with 1/4 teaspoon red pepper jelly. Sprinkle walnuts on top.
5. Bake for approximately 13 minutes or until golden brown.