Combine 1/2 cup dates, almonds, vanilla extract, and salt in a high-speed blender.

Blend until smooth.

Transfer the mixture to a plate.

Spread the almond mixture into a 4x6-inch square.

Place in the freezer for 10 minutes to harden.

Blend the remaining 1 cup of dates until smooth.

Remove the almond mixture from the freezer.

Spread the blended dates evenly on top of the almond mixture with oiled hands.

Sprinkle peanuts onto the fudge.

Gently press the peanuts into the blended dates.

Freeze until the bars are set, about 15 minutes.

Melt chocolate chips in a microwave-safe bowl in 15-second intervals, stirring after each melting, for 1 to 3 minutes.

Remove bars from the freezer.

Cut into 5 pieces with a sharp knife.

Dip bars in melted chocolate.

Place onto a plate to cool until hardened.

Store in an airtight container in the refrigerator.