- Preheat oven to 350 degrees 
- Line square glass baking dish with parchment & give a light spritz with cooking spray 
- In large bowl combine flour, cocoa, baking soda & salt - whisk to combine 
- In a smaller bowl combine chocolate chips & butter - microwave in 30 second intervals until melted - allow to cool slightly 
- Add in sugar to melted butter & chocolate- stir 
- Add eggs, milk & vanilla. - Stir well until combined 
- Pour into dry mixture & fold until completely combined 
- Transfer to prepared dish 
- Bake for 20-30 minutes- might not appear done in the middle - that's okay, they will settle as they cool- that's what keeps it fudgy. 
- Remove from oven 
- Cool completely before adding frosting & cutting 
- Once cool - spread frosting on in an even layer - move on to assembling trifle 
- *Frosting 
- In a mixer with a paddle attachment cream butter until light & fluffy 
- Add in confectioners sugar & beat slowly 
- Once mixture looks moist but crumbly add in milk & beat until fluffy again - if you want it a little softer add additional milk 1-2 tsp at a time 
- *Assemble 
- Cut frosted brownies into bite size pieces & add several pieces into the bottom of your glasses 
- Sprinkle in your peanut butter morsels 
- Top with whipped topping & continue in the same process until your glass is full ending with the peanut butter morsels 
- Refrigerate until ready to serve