Preheat oven to 350 degrees Fahrenheit. Oil-spray a muffin tin.

In a frying pan, heat oil. Add vegetables and spices and sauté until vegetables are tender, approximately 10–15 minutes. Allow to cool completely.

Place puff pastry squares in the muffin tin. Place approximately 2 teaspoons vegetable filling in each square. Sprinkle some cheese on top.

Bake for 45–50 minutes or until pastries are nice and brown.