01 - Line an 8-inch square baking pan with parchment paper, leaving an overhang on opposite sides for easy removal later.
02 - In a medium saucepan over low heat, combine sweetened condensed milk and butter. Stir constantly until butter melts and mixture is warm throughout, being careful not to boil.
03 - Remove saucepan from heat. Add white chocolate chips and stir vigorously until completely melted and smooth, ensuring no lumps remain.
04 - Stir in brewed coffee, vanilla extract, cocoa powder, almond extract, and instant espresso powder if using. Mix thoroughly until fully incorporated and mixture is uniformly smooth.
05 - Pour the fudge mixture into the prepared pan. Use a spatula to spread evenly and smooth the top surface.
06 - Sprinkle mini chocolate chips or chocolate shavings evenly over the top surface if desired, pressing lightly to adhere.
07 - Refrigerate for at least 2 hours or until completely firm and set throughout.
08 - Lift the fudge from pan using parchment paper overhang. Cut into 24 equal squares and serve immediately or store in refrigerator.