How to Use REBBL Protein Shakes in Baking: Easy Muffins and Brownies

Have you ever considered using a protein shake as a baking ingredient? Most people drink them straight out of the bottle, but REBBL’s functional super-herb elixirs and protein shakes can do double duty in the kitchen. By swapping part of the liquid or sweetener in a recipe for a REBBL protein shake, you instantly boost the protein content while adding subtle flavor and natural sweetness from ingredients like coconut sugar and monk fruit. Plus, the adaptogenic herbs such as reishi and maca survive gentle heat, so you still get their wellness benefits even after baking.

In this guide, we’ll walk you through the general substitution rules for baking with REBBL shakes, then share two specific recipes: a fudgy chocolate brownie made with the rich 32g Chocolate Protein Shake and a tender vanilla muffin built around the 20g Vanilla Protein Shake. Whether you’re prepping post-workout snacks, healthy school lunches, or just want a better-for-you treat, these recipes will show you how easy it is to turn a ready-to-drink shake into something warm, soft, and satisfying.

Why Bake with REBBL Protein Shakes?

Adding REBBL protein shakes to your baking batter does more than just up the protein count. Because these shakes are plant-based and unsweetened or lightly sweetened with clean ingredients, they replace heavier liquids like milk or oil while contributing a creamy texture. The fat content—mainly from coconut milk or pea protein—keeps muffins and brownies moist without making them greasy. And the functional herbs (reishi, maca, ashwagandha) retain their adaptogenic properties at typical baking temperatures, so every bite supports stress resilience and focus.

Another advantage is the flavor range. A chocolate shake can deepen cocoa notes in brownies, while a vanilla shake brightens the aroma of muffins. You can even use fruit-forward flavors like the 20g Strawberries & Creme Protein Shake to create pink-speckled baked goods with a real berry taste. This versatility means you don’t need to keep multiple specialty protein powders on hand—just grab a bottle of REBBL and pour it in.

• Start by replacing half of the liquid (milk, water, or oil) with an equal volume of protein shake, then adjust if the batter seems too thick or thin.

How to Substitute REBBL Shakes in Any Baking Recipe

You don’t need a special recipe to start baking with REBBL shakes. The general rule is to treat a protein shake as a liquid ingredient with built-in sweetness and flavor. In a standard muffin or quick bread recipe, replace ½ to ¾ cup of the milk or buttermilk with the same amount of protein shake. If the original recipe calls for sugar, reduce it by 10–15% because the shake often contains a little natural sweetener. For brownies, you can substitute up to ⅓ cup of the oil or butter with the shake to cut fat while keeping fudginess.

Watch for batter consistency: protein shakes are thinner than heavy cream but thicker than water. If the batter becomes too runny, add a tablespoon of oat flour or almond meal. If it’s too stiff, add a splash of unsweetened plant milk. The shake also helps create a tender crumb because the protein bonds with the flour’s gluten—just don’t overmix. Stir until just combined, then bake as usual. For best results, use the 32g Chocolate Protein Shake in recipes where chocolate is the star, and the 20g Vanilla Protein Shake in fruity or spice-based batters.

• Always let the batter rest for 3–5 minutes after mixing to allow the protein shake to fully hydrate the dry ingredients.

Fudgy REBBL Chocolate Brownies (with 32g Chocolate Protein Shake)

These brownies are rich, dense, and deeply chocolatey—perfect for satisfying a sweet tooth without a sugar crash. Ingredients: 1 bottle (11 oz) of the 32g Chocolate Protein Shake, ½ cup melted coconut oil, ¾ cup coconut sugar, 2 flax eggs (2 tbsp ground flax + 6 tbsp water), ¾ cup cocoa powder, 1 cup all-purpose flour or gluten-free blend, ½ tsp baking powder, ¼ tsp salt, and ½ cup dark chocolate chips. Preheat oven to 350°F and line an 8×8 pan with parchment.

Whisk the flax eggs with the coconut sugar and melted oil until smooth. Slowly pour in the 32g Chocolate Protein Shake and stir until combined. Sift the cocoa, flour, baking powder, and salt into the wet mixture, then fold gently until no streaks remain. Stir in the chocolate chips. Pour the batter into the pan and bake for 25–28 minutes. A toothpick inserted should come out with a few moist crumbs. Cool completely before cutting—these get even fudgier after an hour in the fridge.

• For extra adaptogen power, top with a drizzle of melted REBBL Reishi Chocolate Plant Based Shake before serving.

Light & Fluffy REBBL Vanilla Muffins (with 20g Vanilla Protein Shake)

These muffins are a perfect grab-and-go breakfast or post-workout snack. They’re subtly sweet, soft, and pair beautifully with fresh fruit or a dollop of nut butter. Ingredients: 1 bottle (11 oz) of the 20g Vanilla Protein Shake, ⅓ cup melted coconut oil, 2 eggs (or 2 flax eggs), ¼ cup maple syrup, 1 ½ cups all-purpose flour, 1 tsp baking powder, ½ tsp baking soda, ¼ tsp salt, and ½ cup blueberries (fresh or frozen). Preheat oven to 375°F and line a muffin tin with paper liners.

In a large bowl, whisk together the melted oil, eggs, maple syrup, and the entire bottle of Vanilla Protein Shake. In another bowl, combine the flour, baking powder, baking soda, and salt. Pour the dry ingredients into the wet and gently fold with a spatula until just combined. Gently fold in the blueberries. Divide the batter evenly among 12 muffin cups (about ¾ full each). Bake for 18–20 minutes, until a toothpick comes out clean and the tops are lightly golden. Let cool in the pan for 5 minutes, then transfer to a wire rack.

• Swap blueberries for chopped strawberries if you want to echo the 20g Strawberries & Creme Protein Shake flavor.

Baking with REBBL protein shakes is an easy way to turn a drink into a wholesome, portable treat. The 20g Vanilla Protein Shake and 32g Chocolate Protein Shake are especially reliable in muffins and brownies, but feel free to experiment with other flavors from the REBBL lineup. For your next baking project, grab a bottle of the 20g Vanilla Protein Shake and see how simple it is to upgrade your favorite muffin recipe into a high-protein, super-herb-infused delight.