Preheat oven to 350°F (175°C).
Line an 8-inch square baking pan with parchment paper; set aside.
Using a standing mixer or electric mixer, combine melted butter, vegetable oil and sugar together in a large mixing bowl. Whisk well for about a minute. Add the eggs, milk and vanilla; beat until lighter in color.
Sift in flour, cocoa powder, cinnamon, chocolate chips and salt. Gently fold the dry ingredients into the wet ingredients until just combined.
Pour the brownie batter into prepared pan, smoothing the top out evenly.
Bake for 45-50 minutes, or until the centre of the brownies in the pan no longer jiggles and is just set to the touch (the brownies will keep baking after they're removed from the oven).
Remove and allow to cool to room temperature.
While your brownies are cooling, make your fudge topping. In a saucepan over low heat, melt the chocolate and condensed milk. Stir constantly until combined then add your espresso coffee and continue to stir for another minute.
Once the brownies have cooled, cut them into 9 even squares.
Place the ganache inside a piping bag. Cut the tip of the bag to make a small hole. Squeeze bag to pipe frosting over brownies.
Place oreos inside a ziplock bag and using a rolling pin crush the cookies until fine crumbs,
Sprinkle the oreo crumbs over the top of the brownies with fudge.
Over the crushed oreos place a gummy worm. One gummy worm per brownie