Grease and parchment line an 9x13 inch casserole dish and set aside. This helps with easy removal so you don’t have to cut them in the pan.

Melt the butter in a large saucepan over medium heat stirring occasionally, and allow it to cook until some golden brown flecks begin to form (about 5 minutes).

Add the cocoa powder, half of the chocolate malted milk powder, kosher salt and sweetened condensed milk and stir to combine. Allow the mixture to come to a boil, and allow it to bubble for one minute, stirring.

Add 10 oz of the mini marshmallow and stir until melted. Add the chocolate chips, remaining chocolate malted milk powder and stir, allow them to melt slightly. Remove from the heat.

Add the remaining marshmallows and toss to coat, then add the cocoa krispies and toss until completely coated.

Transfer to the prepared dish and gently pull/push the mixture around the pan to meet the edges (don’t press down hard). Top with flaky sea salt.

Cover and allow it to set up for one hour. Slice and serve.