Healthy Homemade Cosmic Brownies
Healthy Homemade Cosmic Brownies is a easy American recipe that serves 4. 200 calories per serving. Recipe by Donaldo Estevam on YouTube.
Prep: 17 min | Cook: 7 min | Total: 34 min
Cost: $37.64 total, $9.41 per serving
Ingredients
- 1 cup Rolled Oats (old‑fashioned rolled oats)
- 2 scoop Dark Chocolate Protein Powder (chocolate‑flavored, dark color; one scoop for brownie mix, one for frosting)
- 0.5 cup Water (room temperature; additional water added to frosting as needed)
- 8 slice White Bread (standard sandwich bread, 160 calories per two slices)
- 4 tablespoon Egg Whites (liquid egg whites, used as glue)
- 1 cup Confectioners Sugar (powdered sugar for frosting)
- 1 teaspoon Cooking Oil (light oil or spray for air fryer basket)
Instructions
Blend Oats and Protein
Place 1 cup rolled oats and 1 scoop dark chocolate protein powder into the blender, add ½ cup water, and blend until the mixture resembles a coarse powder with a few small pieces.
Time: PT5M
Refrigerate Overnight Oats Mix
Transfer the blended mixture to a mixing bowl, press it together until it looks like cookie dough, cover, and refrigerate for at least 8 hours or overnight.
Time: PT0M
Flatten Bread Slices
Using a rolling pin, gently roll each white‑bread slice flat on a clean surface.
Time: PT2M
Apply Egg‑White Glue
Spread about 1 tablespoon of egg whites on the underside of each flattened slice; repeat for the top side of the second slice.
Time: PT2M
Assemble the Uncrustable
Place a generous spoonful of the chilled oat‑protein brownie dough onto the center of one slice, top with the second slice, press edges together, and seal the perimeter using a fork.
Time: PT3M
Prepare Air Fryer
Lightly coat the air‑fryer basket with 1 teaspoon oil or cooking spray to prevent sticking.
Time: PT1M
Air‑Fry the Uncrustables
Place the sealed uncrustables in the basket leaving a little space between them, set the air fryer to 350°F (180°C) and cook for 7 minutes, turning halfway if desired.
Time: PT7M
Temperature: 350°F
Make Protein Frosting
In a bowl whisk together 1 cup confectioners sugar and 1 scoop dark chocolate protein powder, then add water a teaspoon at a time until a smooth, spreadable frosting forms.
Time: PT3M
Finish and Serve
Drizzle or spread the frosting over the warm uncrustables. Serve immediately or refrigerate briefly to let the frosting set.
Time: PT2M
Nutrition Facts
- Calories
- 200
- Protein
- 20 g
- Carbohydrates
- 20 g
- Fat
- 5 g
- Fiber
- 3 g
Dietary info: High Protein, Low Calorie, Vegetarian
Allergens: Wheat, Egg
Ingredient Substitutions
- Instead of Rolled Oats: Quick oats, Oat flour
- Instead of Dark Chocolate Protein Powder: Vanilla protein powder (color will differ), Whey protein
- Instead of Water: Milk (will change texture)
- Instead of White Bread: Whole wheat bread, Gluten‑free bread
- Instead of Egg Whites: Aquafaba (chickpea water) for vegans
- Instead of Confectioners Sugar: Powdered erythritol
- Instead of Cooking Oil: Non‑stick spray, Olive oil spray
Equipment Needed
- Blender
- Mixing Bowl
- Measuring Cups
- Whisk
- Fork
- Air Fryer
- Rolling Pin
- Plate
Critical Steps — Do Not Skip
- Blending oats and protein to a coarse powder without over‑processing.
- Achieving a cookie‑dough consistency after refrigeration.
- Sealing the bread edges with egg whites and a fork to prevent leakage.
- Air‑frying for the correct time (7 min at 350°F) to get a golden exterior without burning.
Chef Tips from the Video
- For an extra chocolate boost, add 1 tablespoon cocoa powder to the brownie mixture.
- Use a silicone brush to spread egg whites evenly without excess mess.
- If you prefer a crunchy crust, spray the bread lightly with oil before air frying.
Troubleshooting
The brownie mixture is too wet and spreads.
Add an extra tablespoon of rolled oats or a pinch more protein powder, then chill for another 30 minutes.
Filling leaks from the edges during air frying.
Make sure the egg‑white seal is thick and press the fork edges firmly; you can also refrigerate the assembled sandwiches for 10 minutes before air frying to firm up the seal.
Frosting is too runny.
Add a little more confectioners sugar, whisking until the desired thickness is reached.
Storage
Refrigerator: Store in an airtight container for up to 3 days.
Freezer: Wrap individually and freeze for up to 1 month; reheat in air fryer before serving.
Room temperature: Not recommended beyond 2 hours due to egg‑white content.
Make-Ahead Tips
- Prepare the oat‑protein brownie mixture the night before and keep it refrigerated.
- Assemble the uncrustables and freeze them; air‑fry directly from frozen, adding 2‑3 extra minutes.
- Frosting can be whisked up a day ahead and stored in a sealed jar in the fridge.
Frequently Asked Questions
What is the cultural significance and history of Cosmic Brownie Uncrustables in American snack culture?
Cosmic Brownie Uncrustables blend the nostalgic appeal of the pre‑packaged Cosmic Brownie snack with the DIY convenience of homemade uncrustable sandwiches, reflecting a modern American trend toward high‑protein, low‑calorie portable treats.
What are the traditional regional variations of brownie‑style snacks in the United States?
While classic brownies are baked, regional snack variations include bar‑style brownies, brownie bites, and portable brownie sandwiches like this protein‑packed uncrustable, each adapting the dense chocolate flavor to on‑the‑go lifestyles.
How is the Cosmic Brownie Uncrustable traditionally served in American households?
It is typically served as a quick snack, breakfast bite, or post‑workout treat, often eaten straight from the fridge or warmed briefly in an air fryer, and sometimes drizzled with extra frosting for a dessert‑like finish.
What occasions or celebrations is the Cosmic Brownie Uncrustable associated with in American culture?
These protein‑rich snacks are popular for school lunches, gym snack packs, road trips, and casual gatherings where a sweet yet nutritious bite is desired.
What makes the Cosmic Brownie Uncrustable special or unique in American snack cuisine?
It combines the indulgent flavor of a chocolate brownie with the convenience of a sandwich, adds a high‑protein boost from oats and protein powder, and uses an air fryer for a low‑fat, crispy exterior.
What are the authentic traditional ingredients for a Cosmic Brownie Uncrustable versus acceptable substitutes?
Authentic ingredients include rolled oats, dark chocolate protein powder, white sandwich bread, egg whites, and confectioners sugar. Acceptable substitutes are quick oats, vanilla protein powder (color changes), whole‑wheat or gluten‑free bread, aquafaba for vegans, and powdered erythritol for a low‑sugar frosting.
What other American high‑protein snacks pair well with the Cosmic Brownie Uncrustable?
Pair it with Greek yogurt, a handful of almonds, or a fruit‑smoothie for a balanced snack that adds extra protein and fresh fruit flavors.
What are the most common mistakes to avoid when making Cosmic Brownie Uncrustables?
Common errors include over‑blending the oat‑protein mixture, using too much water (resulting in a runny filling), not sealing the bread edges firmly with egg whites, and under‑cooking in the air fryer which can leave the egg‑white glue raw.
Why does this recipe use egg whites as a glue instead of butter or mayonnaise?
Egg whites provide a low‑calorie, high‑protein adhesive that sets when heated, keeping the snack light while still ensuring a strong seal; butter or mayo would add unnecessary fat and alter the flavor profile.
What does the YouTube channel Donaldo Estevam specialize in?
The YouTube channel Donaldo Estevam focuses on quick, high‑protein, low‑calorie recipes that are easy to make at home, often using everyday kitchen tools like air fryers and blenders.
How does the YouTube channel Donaldo Estevam's approach to protein‑packed snacks differ from other cooking channels?
Donaldo Estevam emphasizes minimal ingredient lists, uses pantry staples, and showcases time‑saving techniques such as overnight oats and air‑fryer cooking, setting his content apart from channels that rely on more complex or specialty equipment.
Last updated: September 1, 2026
