Add the 1” cubes of soap base to the measuring cup. Heat in the microwave for 30 seconds to melt.
Add sugar, almonds oil, and pumpkin pie spice, and stir. You may need to heat for an additional 10-15 seconds, if it’s getting thick.
Add the essential oil, stir, then pour into 3 of the mold cavities.
Let set for about 2 hours, then unmold and cut each square into fourths.
Store in an airtight container.