Step 1

Line 9-inch square pan with parchment paper, allowing some to hang over edges of pan for easy removal.

Step 2

In large microwavable bowl, microwave white vanilla baking chips and condensed milk uncovered on High 45 seconds; stir. Continue heating in 15-second increments, stirring after each, until chips are just melted and mixture is smooth. Stir in vanilla and 3 tablespoons of the candy sprinkles.

Step 3

Immediately pour into pan; spread evenly with an offset metal spatula. Top with remaining 1 tablespoon sprinkles.

Step 4

Chill at least 2 hours, or until firm. Remove from pan by lifting edges of parchment paper. Cut into shapes with cookie cutters, or into triangles or squares with sharp knife.