Pretzel Caramel Chocolate Candy Bars

INGREDIENTS

2 tsp

butter (, softened)

4 cups

pretzel sticks

2 1/2 cups

pecan halves (, toasted)

2 1/4 cups

packed brown sugar

1 cup

butter (, cubed)

1 cup

corn syrup

1 can

((14 ounces) sweetened condensed milk)

1/8 tsp

salt

1 tsp

vanilla extract

package ((11-1/2 ounces) milk chocolate chips)

1 tbsp

plus 1 teaspoon shortening (, divided)

1/3 cup

white baking chips