Heat oven to 350°F.
Line 15x10x1-inch pan with foil.
Spray foil with cooking spray.
Place crackers in single layer in pan.
In 2-quart saucepan, cook and stir butter, sugar and salt over medium heat until butter is melted. Heat to boiling, stirring frequently.
Boil 7 to 9 minutes longer, stirring frequently, until light brown color.
Remove from heat.
Add vanilla; stir until blended.
Immediately pour mixture evenly over crackers in pan;
spread to cover.
Bake 13 to 15 minutes or until bubbly and brown in color.
Sprinkle chocolate chips on top of cracker mixture.
Let stand 5 minutes.
Spread chocolate evenly over cracker mixture.
Sprinkle with candy sprinkles.
Cool completely, about 2 hours or until chocolate is set
. Break into pieces. Store covered in refrigerator up to 1 week.