Step 1

Preheat oven to 350 degrees F (175 degrees C). Line baking sheets with parchment paper.

Step 2

Whisk oats, flour, toffee bits, baking soda, salt, nutmeg, cinnamon, and cloves together in a bowl.

Step 3

Beat brown sugar and butter together in a bowl with an electric mixer until creamy, 2 minutes. Beat in egg. Beat persimmon puree and vanilla into butter mixture.

Step 4

Mix flour mixture into persimmon mixture until dough is just moistened and no streaks of flour or oats remain. Drop spoonfuls of dough 1 1/2 inches apart onto ungreased baking sheets.

Step 5

Bake cookies in the preheated oven until slightly browned on the edges, 8 to 12 minutes. Cool on the baking sheet for 10 minutes before transferring to wire racks to cool completely.