Preheat oven to 350 degrees. Line an 8x8 with aluminum foil or parchment paper and spray with cooking spray. Set aside.
Put the Ritz Crackers into a food processor and pulse until they are fine crumbs. Or put into a gallon sized baggie and crush until fine with a rolling pin.
In a medium mixing bowl mix together the Ritz cracker crumbs, toffee chips, and sweetened condensed milk until incorporated.
Press the crumbs into the bottom of your 8x8 pan. Sprinkle the chocolate evenly on the top. Bake for 10 minutes. Once the pan comes out of the oven, spread melted chocolate chips evenly with a spoon. Allow to cool for about an hour and enjoy!