Preheat oven to 350ºF and grease a mini muffin tin with olive oil. Set aside.
In a large mixing bowl, add all crust ingredients. Stir with a spoon, until you're left with crumbly bits. Then, knead with your hands until you form a dough ball.
Sandwich dough ball between two pieces of parchment paper. Use a rolling pin to roll flat.
Use a round cookie cutter to stamp out crusts. Then, transfer to a mini muffin tin to shape.
Bake for 15 minutes.
In the meantime, make your filling by stirring together pumpkin puree and egg.
Fill half-baked crusts. Then, bake an additional 15 minutes.