Preheat oven to 400°F. Microwave chocolate and butter in large microwavable bowl on HIGH 1 minute or until butter is melted. Stir until chocolate is completely melted. Add sugar; mix well. Blend in eggs and vanilla. Stir in flour until well blended.
Unfold pastry sheet on lightly floured surface. Roll into 15x12-inch rectangle. Cut into 20 (3-inch) squares. Press 1 square onto bottom and up side of each of 20 medium muffin cups. Fill each with 1 Tbsp. of the chocolate mixture.
Bake 15 to 20 minutes or until pastry is golden brown. Remove from muffin pans. Cool on wire racks. Sprinkle with powdered sugar, if desired.
How to Thaw Pastry Sheet
Let frozen pastry sheet stand at room temperature, covered, for about 30 minutes to thaw.
Calories From Fat
% Daily Value*
Total Fat 10g
Saturated Fat 4g
Trans Fat 0g
Total Carbohydrates 15g
Dietary Fiber 1g
* Percent Daily Values are based on a 2,000 calorie diet.
Makes 20 servings, 1 brownie cup each.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.