Melt butter with cocoa in microwave for 45 seconds. Stir together and add sugar. Cool slightly and whisk in wet ingredients followed by flour, coffee, and salt. Pour into greased 8x8” baking dish and microwave on high for 5 minutes. Cool 10 minutes before cutting.
Recipe by Jellibean Journals at https://jellibeanjournals.com/five-minute-brownies/