Coat a 9 by 13 inch baking dish with cooking spray.
Place potatoes in a large pot, cover with water, and add a pinch of salt. Bring to a boil, reduce heat, and simmer until potatoes are very tender, about 15 minutes. Drain and set aside to cool.
Meanwhile, make the topping. Put the gingersnaps, flour, sugar, and 1/4 tsp salt in a food processor; pulse once or twice to combine. Add the butter and pulse a few more times. (the cookies should still be in small chunks).
Remove the skins from the potatoes. Make into a chunky puree using a blender, food processor, or by hand using a potato masher.
In a large bowl, whisk together the maple syrup, half and half, vanilla, cinnamon, nutmeg, eggs, and remaining 1 tsp salt. Add the potato puree; mix thoroughly.
Transfer to baking dish. Sprinkle the topping evenly over the dish. *At this point it may be covered in several layers of plastic wrap and frozen for up to three weeks. Thaw it in the refrigerator overnight, bring to room temperature, and continue.*.
Preheat the oven to 350°F Bake for 45 minutes, or until the top is lightly browned.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	408.73 Kcal (1711 kJ)
Calories from fat	108.22 Kcal
		% Daily Value*
Total Fat	12.02g	18%
Cholesterol	55.07mg	18%
Sodium	557.54mg	23%
Potassium	752.94mg	16%
Total Carbs	70.33g	23%
Sugars	27.52g	110%
Dietary Fiber	6.63g	27%
Protein	6.67g	13%
Vitamin C	3.9mg	6%
Vitamin A	2mg	66%
Iron	3.2mg	18%
Calcium	122.9mg	12%

Amount Per 100 g
Calories	156.8 Kcal (656 kJ)
Calories from fat	41.52 Kcal
		% Daily Value*
Total Fat	4.61g	18%
Cholesterol	21.12mg	18%
Sodium	213.89mg	23%
Potassium	288.85mg	16%
Total Carbs	26.98g	23%
Sugars	10.56g	110%
Dietary Fiber	2.54g	27%
Protein	2.56g	13%
Vitamin C	1.5mg	6%
Vitamin A	0.8mg	66%
Iron	1.2mg	18%
Calcium	47.1mg	12%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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