3 Ingredient Sweet and Spicy Slow Roasted Pumpkin Seeds

Pumpkin Seeds with Shell on

Quick Summary

Roasted pumpkin seeds are one of the easiest and most nutritious snacks you can make at home. This 3-ingredient recipe uses simple pantry staples to create a sweet, spicy, slow-roasted treat that’s gluten-free, protein-rich, and packed with zinc, magnesium, and healthy fats. Unlike store-bought versions loaded with sodium and preservatives, these homemade seeds take under 30 minutes and cost a fraction of the price. Perfect for snacking, topping salads, or stirring into oatmeal — they’re a registered dietitian‘s go-to crunchy staple.


Most people toss their pumpkin seeds straight in the trash, and that’s a shame, because they might be the most nutrient-dense part of the whole pumpkin. This simple 3-ingredient recipe transforms raw seeds into a sweet, spicy, slow-roasted pumpkin seeds snack that’s crispy, addictive, and ready in under 30 minutes. No fuss. No long ingredient lists. Just big flavor and serious nutritional payoff.

Whether you’re carving a Halloween pumpkin or using a sugar pumpkin for baking, save those seeds. Even if you don’t have fresh pumpkin, raw pepita seeds from the store work beautifully here.

Why You’ll Love These Roasted Pumpkin Seeds

  • Only 3 ingredients, you likely already have them all
  • Ready in under 30 minutes from rinse to roast
  • Naturally gluten-free and easy to make vegan
  • Far less sodium than store-bought varieties
  • Versatile: snack on them, sprinkle on salads, or stir into yogurt bowls

If you love easy, nutrient-packed snacks, check out these related recipes:

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Ingredients You’ll Need

  • 1 cup raw pumpkin seeds (from a fresh pumpkin, or raw pepitas)
  • 1 tablespoon pure maple syrup or honey
  • 1/4 – 1/2 teaspoon cayenne pepper (adjust to your heat preference)
  • Optional: pinch of sea salt

That’s it. Three ingredients: sweet, spicy, and a little salty. The maple syrup caramelizes in the oven, creating a lightly crisp coating around each seed.

How to Roast Pumpkin Seeds (Step-by-Step Guide)

  1. Preheat your oven to 300°F (150°C). Cooking at a lower temperature helps the seeds roast evenly and become crisp without burning.
  2. If using fresh pumpkin seeds, rinse them thoroughly under cold water to remove any stringy pulp. Pat them completely dry with paper towels or a clean kitchen towel. Moisture prevents the seeds from becoming crunchy.
  3. In a medium bowl, toss the dry seeds with maple syrup, cayenne pepper, and a pinch of sea salt until they are evenly coated.
  4. Spread the seeds in a single layer on a parchment-lined baking sheet. Leave a little space between them so they roast instead of steam.
  5. Roast for 20 to 25 minutes, stirring once halfway through, until the seeds are golden brown and fragrant.
  6. Remove the baking sheet from the oven and let the seeds cool for about 10 minutes. They will continue to crisp as they cool.

Dietitian’s Tips for the Best Roasted Pumpkin Seeds

  • Dry thoroughly: Even a small amount of moisture can cause the seeds to steam instead of roast, preventing them from becoming crisp.
  • Roast at a low temperature: Baking at 300°F gives the seeds time to become crunchy while preventing the maple syrup from burning.
  • Cool before serving: Let the seeds rest on the baking sheet for 10 minutes after roasting. This final cooling period helps them develop their best texture.
  • Store properly: Keep roasted pumpkin seeds in an airtight container at room temperature for up to 2 weeks.

Health & Nutrition Benefits of Pumpkin Seeds

As a registered dietitian, I love roasted pumpkin seeds because they’re a genuinely nutrient-dense snack. Here’s what one ounce (about 1/4 cup) delivers:

  • 9g of plant-based protein
  • Rich in magnesium, which supports sleep, muscle function, and blood pressure
  • Excellent source of zinc for immune health and skin
  • Contains tryptophan, a precursor to serotonin
  • Healthy fats including omega-6 and omega-9 fatty acids

The slow-roast method also helps preserve more of these heat-sensitive nutrients compared to high-heat roasting. A win for flavor and nutrition.

Looking for more ways to add nutritious, whole-food snacks to your routine? Explore Tina’s full collection of dietitian-approved recipes.

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Ready to start snacking smarter? This 3-ingredient recipe takes just 30 minutes and delivers a snack your body will thank you for. Bookmark this page, save the seeds from your next pumpkin, and get roasting!

Frequently Asked Questions

Both work well. Fresh seeds from a carving or sugar pumpkin add a rustic charm, but raw pepitas from the store are already shelled and require zero prep, ideal for a quick weeknight snack.

Yes. Swap maple syrup for a light drizzle of olive oil and a pinch of coconut sugar or omit sweetener entirely. The seeds will still roast up crispy, just less caramelized and more savory.

Stored in an airtight container at room temperature, they’ll stay crisp for up to two weeks, though they rarely last that long. Avoid refrigerating, as moisture makes them chewy.

Pumpkin seeds are seeds, not tree nuts, and are generally well-tolerated by people with nut allergies. However, always check with your allergist if you have a severe or complex allergy history.

Absolutely. Simply omit the cayenne and increase the maple syrup slightly for a sweet-only version that kids tend to love. A pinch of cinnamon makes a great alternative flavoring.

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I'm Tina Marinaccio, a NJ-based Registered Dietitian.

My mission is to empower individuals to nourish their bodies with balanced, flavorful meals that support health, wellness, and an active lifestyle.

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Tina Marinaccio, MS, RDN, CPT, is a Licensed Registered Dietitian Nutritionist and Certified Personal Trainer based in Denville, New Jersey. With more than 25 years of experience in nutrition counseling, personal training, cooking instruction, and public speaking, she helps individuals build sustainable, healthy lifestyles through practical, evidence-based nutrition.

Tina earned her Master’s Degree in Clinical Nutrition from New York University and has completed advanced training in functional medicine and nutrition. Throughout her career, she has served in leadership roles within hospitals, rehabilitation facilities, and the nutrition industry, and has been featured in leading media outlets including Men’s Health, Yahoo, Fox News, AARP, ParadeThe New York Post, MyFitnessPal, Today’s DietitianEat This, Not That!, GoodRx, and Healthline. She is passionate about helping people improve their health through realistic nutrition strategies that fit everyday life.

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