Haven't made these yet, saw the recipe on Facebook and they look absolutely scrumptious.... Will be making them soon!

 Crust: 
2 cups all-purpose flour 
1 cup firmly packed brown sugar 
1/2 cup butter, softened 

2nd Layer 
1 cup pecan halves or chopped pecans 
2/3 cup butter 
1/2 cup firmly packed brown sugar
1 cup milk chocolate morsels 

Preheat oven to 350 degrees. 
Combine first 3 ingredients in a mixing bowl; 
beat at medium speed with an electric mixer until blended. 
Pat mixture firmly into an ungreased 13x9 inch pan.

 Arrange pecans over crust. 
Combine 2/3 cup butter and 1/2 cup brown sugar in a saucepan;
bring to a boil over medium high heat, stirring constantly. 
Cook 3 minutes, stirring constantly.
Pour mixture over pecans. 

Bake at 350 degrees for 15-17 minutes or until golden and bubbly. 
Remove from oven; sprinkle with chocolate morsels. 
Let stand 2-3 minutes or until slightly melted.
Gently swirl chocolate with a knife, leaving some morsels whole (do not spread). 
Let cool on a wire rack at room temperature until chocolate is set. Cut into squares.