Roasted Parsnip, Carrot, Potato and Onion Gratin

Parsnips are a root vegetable related, not shockingly, to the carrot. They are a bit sweeter and are great for soups or casseroles such as this Roasted Parsnip, Carrot, Potato and Onion Gratin!




I’ll admit that we have been roasting potatoes almost daily since I pulled out three boxes of ’em at our farm pot luck and I was eager to do something new with them.   This mixture of root veggies came out so well that it’s now going to be a regular in our rotation.

Parsnips are a persnickety vegetable.

OK well maybe they aren’t persnickety, I just thought it would be fun to say that.

But they are stuffed full of vitamin C, like those jeans that barely fit and then you try ’em on after eating the Golden Corral buffet and you suddenly pop a button. Yeah, that stuffed.  Which is great for building the immune system, fighting cardiovascular disease and even preventing skin wrinkling.   Now before you go out and get yourself a box of parsnips and start rubbing ’em on your face, you might want to try a funner to get them into your diet….gratin-style, awwwww yeah.
The inside of the gratin is nice and soft and I cranked the broiler for the last few minutes to get the outside nice and crisp, almost like chips.  The texture of the potatoes from my local farm is so buttery that you don’t need to add any butter and the onions, carrots and parsnips add nice sweetness.

Roasted Parsnip, Carrot, Potato and Onion Gratin

Roasted Parsnip, Carrot, Potato and Onion Gratin

Serves 8
Vegan, Gluten Free


4 lbs root veggies, sliced thinly with a mandolin – I used a variety of potatoes, parsnips and carrots
2 large onions, sliced thinly with a mandolin
1/4 cup olive oil
1 tsp sea salt


1. Preheat oven to 375F.  Slice all veggies thinly with a mandolin.  Mix with sea salt, and olive oil in a large bowl.  Pour into 9×13 inch baking dish.  Bake 1 hour then set broiler to high for 4 to 5 minutes.

Estimated Nutrition Facts
8 Servings
Amount Per Serving
Calories 260.4
Total Fat 7.2 g
Saturated Fat 1.0 g
Polyunsaturated Fat 0.7 g
Monounsaturated Fat 5.1 g
Cholesterol 0.0 mg
Sodium 324.1 mg
Potassium 1,097.7 mg
Total Carbohydrate 46.1 g
Dietary Fiber 7.2 g
Sugars 5.4 g
Protein 4.9 g

Vitamin A 55.1 %
Vitamin B-12 0.0 %
Vitamin B-6 32.6 %
Vitamin C 77.7 %
Vitamin D 0.0 %
Vitamin E 8.0 %
Calcium 5.6 %
Copper 15.2 %
Folate 18.0 %
Iron 10.7 %
Magnesium 16.1 %
Manganese 25.8 %
Niacin 13.1 %
Pantothenic Acid 9.8 %
Phosphorus 16.0 %
Riboflavin 6.3 %
Selenium 2.4 %
Thiamin 14.7 %
Zinc 5.2 %
*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

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