Homemade Reese's/Twix Bar's

I originally saw this recipe on Hoosier Homemade's Blog, and I have been dying to make them.
They are really lovely, and although the recipe title is actually Twix Bar's I really thought they were more of a cross between a Twix candy bar and a Reeses peanut butter cup.
Whatever you want call them, they are fabulous!

REESE'S/TWIX BAR'S

Bottom layer:

1 sleeve Club Cracker's.

Lightly spay a 9 x 13 baking dish with non-stick spray.  Using approximately 24 crackers, line the bottom of the pan.

Caramel layer:

1 c. graham cracker crumbs

3/4 c. brown sugar

1/3 c. white sugar

1/3 c. milk

1/2 c. butter

In a medium sauce pan mix together these first 5 ingredients, and bring to a boil stirring often.  Continue to boil 4 minutes (The sauce will be a caramel color and pull away slightly from the side of the pan).
Pour caramel over the crackers, smoothing out evenly. Place a second layer of crackers onto of the caramel, and press down slightly.
Chill for 30 minutes.

Chocolate Top Layer:

2/3 c. peanut butter

1 c. milk chocolate chips

Place these 2 ingredients in a microwave safe bowl and microwave for 2 minutes.  Stir well. If chocolate is still a little lumpy, microwave in 15 second increments stirring between each time.
Once smooth, Pour over second layer of crackers, smoothing to edges of pan, and chill again until chocolate is set.  (At this point, the original recipe calls for you to chill the chocolate topping until firm and then frost the crackers, but I wanted to take the simpler way out-lol).

Cut into cracker size pieces and enjoy!  Store in the refrigerator.

Source: Hoosier Homemade