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Sweet Potato & Flax Crunch Dog Biscuits – Fiber-Rich, Naturally Crunchy & Great for Digestion

These crunchy biscuits are built for digestive support and everyday wellness. Sweet potato delivers gentle fiber and beta-carotene to support gut health and immunity, while ground flaxseed adds omega-3 fatty acids and soluble fiber that help promote healthy digestion and a glossy coat. Baked to a satisfying crunch, these biscuits are ideal for dogs who enjoy crisp treats made with clean, functional ingredients.

Ingredients
  

  • 1 cup cooked mashed sweet potato (plain, no skin, no seasoning)
  • 1 egg
  • cups oat flour or rolled oats blended into flour
  • 2 tablespoons ground flaxseed not whole seeds
  • 2 –4 tablespoons water as needed to bind
  • All ingredients are dog-safe simple, and free from salt, sugar, spices, or additives.

Equipment

  • Mixing bowl
  • Fork or potato masher
  • Measuring cups
  • Baking sheet
  • Parchment paper or silicone baking mat
  • Rolling Pin
  • Cookie cutters or knife
  • Cooling rack

Method
 

Step 1: Preheat the oven.
  1. Set oven to 350°F (175°C) and line a baking sheet with parchment.
Step 2: Mix the wet base.
  1. In a bowl, combine mashed sweet potato and egg. Mix until smooth.
Step 3: Add dry ingredients.
  1. Stir in oat flour and ground flaxseed. Mix until a firm dough forms. Add water a tablespoon at a time if dough feels dry.
Step 4: Roll and cut.
  1. Roll dough to about ¼-inch thickness. Cut into biscuit shapes or small squares.
Step 5: Bake until crisp.
  1. Bake for 22–26 minutes, until biscuits are firm and lightly golden.
Step 6: Cool completely.
  1. Transfer to a cooling rack. Biscuits will become crunchier as they cool.

Notes

Storage ❄️:
Room temperature: up to 5 days in an airtight container
Refrigerator: up to 2 weeks
Freezer: up to 3 months
Ensure biscuits are fully cooled before storing to maintain crunch.
⚕️ Nutritional Notes (macros or benefits)
Sweet Potato: Fiber, vitamin A, gentle carbohydrates for steady energy
Flaxseed (ground): Omega-3s, digestive fiber, coat and skin support
Oats: Soluble fiber for gut health and sustained fullness
Egg: High-quality protein and binding nutrients
These biscuits are low-fat, fiber-forward, and ideal for digestive wellness.
🥄 Variations (dog-safe only)
Pumpkin & Flax Biscuits: Replace half the sweet potato with pumpkin purée
Extra Crunch Version: Bake an additional 5–7 minutes
Mini Training Crunchies: Cut into very small squares before baking
Grain-Free Option: Use coconut flour (start with ⅓ cup; very absorbent)
Senior-Friendly Crunch: Roll slightly thinner for lighter crunch
❓ 10 FAQs
Is flaxseed safe for dogs?
Yes—ground flaxseed is safe and beneficial; avoid whole seeds.
Can dogs eat sweet potato daily?
Yes, when cooked and served in proper portions.
Are these biscuits hard?
Crunchy, not rock-hard—suitable for most adult dogs.
Can puppies eat these treats?
Yes—break into small pieces.
Why use ground flax instead of whole?
Ground flax is easier to digest and absorb.
Can I use canned sweet potato?
Only if it’s plain with no sugar or spices.
Do these help with digestion?
Yes—fiber from oats, flax, and sweet potato supports regular stools.
Can I air-fry these biscuits?
Yes—air fry at 325°F for 8–10 minutes.
Can I add oil?
Not necessary—these bake well without added fats.
How do I keep them crunchy longer?
Store fully cooled biscuits in an airtight container.
🏁 Conclusion
Sweet Potato & Flax Crunch Dog Biscuits are a wholesome, functional treat that delivers real digestive benefits with every crunchy bite. Made from simple, dog-safe ingredients and baked to a satisfying crisp, these biscuits are perfect for everyday rewarding while supporting gut health and coat shine. Easy to bake, freezer-friendly, and loved by dogs, they’re a smart addition to any homemade dog treat rotation.