Heat oil in a sauté pan over medium heat. Add onions and sauté until translucent, about five to seven minutes.

Add squash and continue to cook until squash is soft, about 20 minutes. Add garlic, salt, and pepper and remove from heat.

In a food processor, grind the crackers into fine breadcrumbs. Add to squash mixture and stir to combine. The texture should be thick like stuffing.

Preheat oven to 350 degrees Fahrenheit.

Slice the chicken on an angle to thin it out into cutlets.

Lay the cutlet with the skin underneath and place a heaping tablespoon of the squash mixture on top. Roll up and place in a baking pan, seam side down.

In a small bowl, combine duck sauce, water, soy sauce, mustard, garlic, and pepper. Pour over chicken.

Bake, uncovered, for one hour.