1 c flour
1/3 c sugar
1 1/2 tsp. baking soda
5 Tbsp. unsweetened cocoa, divided
2/3 c. fat free vanilla yogurt
2 Tbsp. milk
2 Tbsp. Brommel and Brown butter (or equivalent - it's 1 pt per Tbsp.) - melted
1/4 c. fat free fudge topping
1/4 c. brown sugar
6 Tbsp. boiling water