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Golden-brown loaf of bread with two slices on a wooden cutting board.
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Butternut Squash Sourdough Bread with Fresh-Milled Flour

This flavorful and nutritious fresh-milled sourdough loaf is made with roasted butternut squash purée and a touch of honey. With a straightforward, no-mixer method, it’s a hearty and satisfying bread that’s perfect for fall and winter.
Prep Time1 hour
Cook Time50 minutes
Proofing Time18 hours
Total Time19 hours 50 minutes
Course: Side Dish
Cuisine: American
Diet: Low Lactose, Vegetarian
Keyword: butternut squash, fresh milled flour, sourdough
Servings: 15 slices
Calories: 147kcal
Author: Laura

Equipment

  • 1 Food Processor or High Speed Blender
  • 1 Grain Mill
  • 1 Kitchen Scale
  • 3 9x5 inch loaf pans

Ingredients

Butternut Squash Puree

  • 1 large butternut squash peeled and cubed

Bread

  • 400 g hard red wheat berries
  • 100 g spelt
  • 50 g khorasan
  • 275 g butternut squash puree
  • 259 g water
  • 11 g salt
  • 100 g active sourdough starter
  • 15 g honey

Instructions

Butternut Squash Puree

  • Preheat your oven to 400℉ and line a large baking sheet with parchment paper.
  • Add the butternut squash to the baking sheet and roast for about 35 minutes, until lightly browned and soft.
    1 large butternut squash
    cubed butternut squash on a sheet pan
  • Add the roasted squash to the bowl of a food processor and pulse until a puree forms.
    butternut squash puree in a glass bowl
  • Reserve 275g for the bread recipe and store the rest in the fridge or freezer for later use.

Bread

  • Weigh your grains and stir to combine. Then mill them on the finest setting of your grain mill.
    flour coming out of a grain mill
  • To a large measuring cup, add the butternut squash puree and water. Whisk to combine.
    butternut squash puree with water in a glass bowl
  • Add the butternut squash puree and water combination to the flour. Use your hand or a dough whisk to combine until no dry flour remains in the bowl and a ball forms. Add additional water if it is still dry after mixing for several minutes. Cover the bowl and let autolyse at room temperature for 1 hour.
    butternut squash puree with flour in a glass bowl
  • Add the salt and sourdough starter. Combine with your hand until fully incorporated and a smooth ball forms. Cover and let sit at room temperature for 1 hour.
    ball of dough in a glass bowl
  • Perform the first stretch and fold by lifting the dough up and over itself 4 times around the bowl. Cover and repeat every 20 minutes for a total of 4 stretch and fold sessions.
    ball of dough in a glass bowl
  • After the last stretch and fold, cover the bowl and let sit at room temperature for 2 1/2 – 9 hours. The amount of time depends on the temperature of your house. It takes about 2 1/2 - 3 hours when my house is warm. Watch for signs such as many small bubbles around the sides of the dough. It should jiggle when you shake the bowl. An easy hands off approach is to make this in the evening before you go to bed and let it sit at 65℉ for 8-9 hours.
  • Once the dough is fully fermented, line a 9×5 inch loaf pan with parchment paper. Then turn the dough out onto a lightly wet surface and pat it into a rectangle. Roll the dough up and into a loaf shape, pinching the seams. Place seam side down in the prepared loaf pan. Place in a 2 gallon zip top bag and place in the refrigerator. Leave in the fridge 3 – 16 hours.
  • Once ready to bake, preheat your oven to 500℉ and set a timer for 1 hour.
  • Remove the dough from the zip top bag and lift it using the parchment paper and place it into a room temp loaf pan. Score the loaf using a lame or razor blade. Then cover with the third loaf pan.
  • Place in the oven and reduce the oven temperature to 450℉. Bake the bread 45 minutes covered and an additional 4-5 minutes uncovered.
    golden brown loaf of bread in a parchment lined loaf pan
  • Cool completely on a wire rack.

Notes

  • Hard red wheat can be substituted with hard white wheat
  • If you don’t have spelt or khorasan, use all hard red wheat
  • If you don’t have khorasan, substitute with more spelt
  • Canned butternut squash can be used to replace the homemade puree

Nutrition

Serving: 79g | Calories: 147kcal | Carbohydrates: 26g | Protein: 6g | Fat: 1g | Sodium: 134mg | Potassium: 202mg | Fiber: 4.7g | Sugar: 2g | Vitamin A: 93IU | Vitamin C: 2.5mg | Calcium: 22.5mg | Iron: 1.6mg