Place chocolate chips and almond butter in a microwave safe bowl. Microwave for 30 second intervals, stirring after each, until almost all chocolate chips have melted. Stir to completely incorporate chocolate and almond butter until smooth. Add vanilla extract and salt, stir to combine.
Add marshmallows and chopped almonds and stir until incorporated. Transfer chocolate mixture to the prepared pan. Smooth into an even layer with spatula.
Chill In the refrigerator for 1 ½ to 2 hours to set. Once set, transfer fudge to a cutting board by using the parchment flaps. Cut into squares. Store in an airtight container in the refrigerator or at room temperature.