Preheat the oven to 350° F.
Cream together the butter, sugar and brown sugar for 1 minute, until light in color and fluffy in texture.
Scrape the sides of the bowl and add in the eggs and vanilla. Mix until combined.
Add the flour, graham cracker crumbs and baking powder. Mix until a soft dough forms.
Fold in the crushed pretzels.
Portion the dough out into generous 3 tbsp portions.
Roll into a ball and then smash slightly, so it looks like a hockey puck. The cookies will spread some while baking, so keep it pretty thick.
Bake for 9-11 minutes, or until the cookies have spread and are no longer wet and glossy in the center.
Remove from the oven and allow the cookies to cool on the pan.
Once cooled completely, place the cookies in the fridge to chill while making the topping.
To make the topping, fold the thawed raspberries with the frozen whipped topping.
Generously spread the raspberry topping onto the chilled cookies and top with a few extra crushed pretzels as garnish.
Store in the refrigerator and serve chilled.