Sourdough Blueberry Muffins

These Sourdough Blueberry Muffins are a perfect way to use fresh-picked blueberries. Made with a tangy combination of sour cream and sourdough discard, these muffins bake up moist and tender and have a tart, lemon zing. They are ideal to serve at a Summer brunch or have for a quick morning grab-and-go breakfast.

Another way to use your sourdough discard is with my sourdough rhubarb muffins or sourdough zucchini pineapple muffins. Baking with sourdough discard adds nutritional benefits, making baked goods easier to digest. These quick and easy muffins are a wholesome way to bring tangy flavor into an otherwise classic blueberry muffin.

How to make Blueberry Muffins using Sourdough Starter

Dry Ingredients

• All-purpose unbleached flour with 10-12% protein, such as King Arthur or Sir Galahad Artisan Flour (its bulk-purchased name) which has 11.7% protein. Avoid bread flour, as its higher protein content (11-14%), develops more gluten, which results in dense baked goods.
• Instant ClearJel is a modified food starch used as a thickener, stabilizer, and gelling agent. In baked goods it helps retain moisture and produces a light, tender texture. Use cornstarch as a substitution if clearJel is hard to find. For every 1 T. of cornstarch, use 1 1/2 T. ClearJel. For every 2 T. flour or tapioca, use 1 T. ClearJel.
• Baking powder is a leavening agent that contains both an acid, like cream of tarter, and a base, like baking soda to help baked goods rise. Use a double-acting aluminum-free baking powder to avoid a bitter aftertaste.
• Baking soda (sodium bicarbonate) is a leavening agent that, when combined with an acid (like lemon juice, buttermilk, or vinegar) creates carbon dioxide gas to make baked goods rise.
• Nutmeg is a warm spice that comes from the nutmeg tree in the Spice Islands. It is available as whole nutmeg, grated or pre-ground.
• Pink salt adds essential minerals and nutrients to baked goods.

Wet Ingredients

• Butter is made from churned cream that contains 80% butterfat. European butter is churned longer and has a higher fat content (82%-85%), which is why it yields more flavor.
• Canola oil is perfect for baking as it has a neutral and light flavor. You can swap oil for butter and vice versa as oil provides moisture, and butter provides flavor.
• Sugar is derived from sugarcane and provides sweetness to baked goods. The most common type being granulated white sugar. Cane sugar is a natural option that is less processed with a slightly courser texture.
• Sour Cream is cream that has been cultured, giving it a tangy flavor and thick texture. For the best quality, select an all-natural brand labeled “cultured cream”. Avoid “light” varieties, as they contain additives or diluted with milk.
• Eggs are important in baking because their protein provides structure, they are a natural leavener trapping air that expands during baking, and they add moisture to baked goods.
• Vanilla provides hints of caramel and spice, which enhances the depth of flavor in baked goods. Homemade vanilla is best, or use a high-quality, all-natural brand that contains at least 35% alcohol.
• Blueberries are small fruit grown on bushes and are plentiful between late June and early August here in the Midwest.
• Sourdough discard is the unfed portion of sourdough starter that is removed before the starter is fed with fresh flour and water. It is very easy to make, try my basic sourdough starter recipe. If you don’t have starter, just substitute with 1/4 c. buttermilk or sour cream.

Make your own Ingredients

All of my recipes start with all natural, minimally processed ingredients. If I can’t find a natural option, I often make my own base ingredients for baking recipes.

Vanilla: Purchase Grade B vanilla beans (also called extract-grade), which have less moisture and a more concentrated flavor. Place 8 oz. of bourbon (or vodka) in glass bottle or jar. Split 5-7 vanilla beans down the middle and add to bottle. Let it sit for 3-6 months in a cool, dark place. As you use it, continue to replace the bourbon and add more beans as it keeps for many years.

Sourdough Starter: If you don’t have sourdough starter on hand, just substitute with 1/4 c. buttermilk or sour cream. Here is my recipe for basic sourdough starter.

Dietary Substitutions

For the past 12+ years, I have owned an all-natural specialty bakery converting conventional recipes to gluten free, vegan, wholesome, etc. You can read more about my pro-baking here.

Here are a few basic tips when converting conventional recipes into specialty baked goods.

• Shelf Life: Specialty baked goods tend to dry out faster and have a shorter shelf life than conventional baked goods. Store in an airtight container on counter for 1 – 2 days. For longer storage, freeze up to 6 months. Avoid refrigerating, as it can dry out baked goods.
• Let Batter Rest: Alternate flours can be dense or slightly gritty compared to white flour, so be sure to let the batter rest at least 15 minutes or overnight in the refrigerator before baking. This allows the flour to fully hydrate and produce a lighter, tender crumb.
• Oven Temperature: Alternative flours are delicate and tend to brown faster before the center is cooked through. Reduce oven to 325° and bake “low and slow,” adding a few extra minutes of bake time if needed.

Gluten-Free (no gluten)

• Flour: Swap out the flour with a premium gluten-free flour such as King Arthur Measure for Measure or use a homemade gluten-free flour blend. Be sure the flour blend contains xanthan gum or add 1/4 tsp. to 1/2 tsp. per every 1 cup of flour to the recipe.
• Hydration: Gluten free flours can make baked goods dense. Add 1 tablespoon of additional extra liquid (the same liquid called for in the recipe) to help lighten the texture.
• Fat: Add up to 1 to 2 Tbsp of additional fat, such as butter or oil to the recipe.

Vegan/Dairy Free (no animal products)

• Butter: Use unsalted vegan butter sticks such as Violife for best flavor and texture.
• Dairy: Replace dairy with unsweetened plant based milk such as oat, coconut or almond milk.
• Eggs: Replace each egg by adding 1 tsp. baking soda to the batter, then pour 1 Tbsp. white vinegar over it. Add the vinegar last though, to keep the leavening reaction.
• Fat: Add up to 1 to 2 Tbsp of additional fat like oil or vegan butter to the recipe.

Keto (low carb, high fat)

• Flour: Swap the white flour for almond flour or coconut flour.
• Sweetener: Replace sugar with Lakanto Monkfruit Sweetener which calls for a 1:1swap that mimics granulated sugar.
• Dairy: Replace dairy with unsweetened plant based milk such as coconut or almond milk.
• Hydration: Almond flour can make baked goods dense. Add 1 -2 tablespoons of additional extra liquid (the same liquid called for in the recipe) to help lighten the texture. Add 1 additional egg to help bind the batter.
• Fat: Add up to 2 Tbsp of additional fat, such as butter or oil to the recipe.

Wholesome (minimally processed)

• Flour: Swap out 1/3 to 1/2 of the white flour with King Arthur white whole wheat flour or King Arthur 100% whole wheat flour or Bob’s oat flour.
• Sweetener: Replace white sugar with maple syrup or honey. Use 3/4 c. honey for every 1 c. sugar. You can also swap out the white sugar with 1:1 swap using natural cane sugar, coconut sugar or date sugar.
• Dairy: Replace dairy with unsweetened plant based milk such as oat, coconut or almond milk.
• Lower Fat: For every 1 c. of butter, use 3/4 c. heart-healthy oil (like canola or extra-light olive) OR 1/2 c. unsweetened applesauce + 1/2 c. oil.

Allergen Free (none of the 9 allergens)

• Flour: Swap out the flour with a premium gluten-free flour such as King Arthur Measure for Measure or use a homemade gluten-free flour blend that does not contain tree nuts or soy. Be sure the flour blend contains xanthan gum or add 1/4 tsp. to 1/2 tsp. per every 1 cup of flour to the recipe. Here is a list of some other gluten-free flours to try.
• Butter: Use unsalted vegan butter sticks such as Violife for best flavor and texture. Add up to 1 to 2 Tbsp of additional fat like oil or vegan butter to the recipe.
• Dairy: Replace dairy with unsweetened plant based milk such as oat or coconut milk. Check the labels to make sure they are soy-free and nut-free.
• Eggs: Replace each egg by adding 1 tsp. baking soda to the batter, then pour 1 Tbsp. white vinegar over it. Add the vinegar last though, to keep the leavening reaction.
• Nuts: Omit all peanuts and tree nuts (almonds, brazil nuts, cashews, hazelnuts, macadamia nuts, pecans, pine nuts, pistachios, or walnuts.

FAQ’s

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Storage & Freezing

Baked: Place baked muffins in an air-tight container and place on counter up to 3 days. To freeze, cover in saran wrap and place in freezer-safe container up to 6 months. Thaw at room temperature in the container for 1/2 hour before opening up the container.

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How to pick and preserve fresh-picked blueberries

Related Recipes

• Old-Fashioned Blueberry Muffins
• Zucchini Pineapple Muffins with Sourdough
• Sourdough French Bread
• Blueberry Peach Muffins
• Sourdough Rhubarb Muffins

More Muffin Recipes

Blueberry Recipes

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