Whether you call them Hello Dollies or Magic Cookie Bars, this recipe is a fun twist on the classic, because we're using Biscoff cookies which makes it taste even more like the holidays!
Toss the Biscoff cookies in a food processor (or crush them up in a Ziploc bag with a rolling pin or something else hard). They should basically be cookie sand when you're done.
In a large bowl, mix together the cookie sand and melted butter. Mix it really well, because that will help your cookie bar hold together better.
I would recommend spraying of oil in your 13" x 9" dish (on the bottom and the sides); this will help to keep it from sticking when you go to serve it.
Dump the cookie/butter mixture into the dish and evenly spread it out. Press the cookie sand down firmly. This step is important if you don't want crumbly cookie bars.
Evenly layer the chopped pecans on top of the cookie base.
Then add the chocolate chips - try to get them as evenly spread as possible.
Next add the sweetened coconut flakes.
Lastly, add the sweetened condensed oat milk. This is really sticky stuff so I strongly recommend drizzling it on with a spoon so you can get a pretty even layer. This can take some patience, but I promise you, it's better than dumping it in the middle of the casserole dish and attempting to spread it out.
Bake for 23 - 25 minutes. The sweetened condensed oat milk should have browned a bit on the edges.
Allow to cool for at least 30 minutes. If you're serving this or taking it somewhere, you may want to let it set up for a few hours, because it does take awhile for the chocolate chips to fully set up again. I personally like eating it when it's warm and the chocolate chips are nice and gooey but it's really messy!