Homemade Cosmic Brownies with Fudge Glaze and Tempered Chocolate Candy Pieces
Homemade Cosmic Brownies with Fudge Glaze and Tempered Chocolate Candy Pieces is a intermediate American recipe that serves 12. 250 calories per serving. Recipe by Claire Saffitz x Dessert Person on YouTube.
Prep: 1 hr 20 min | Cook: 35 min | Total: 2 hrs 15 min
Cost: $15.10 total, $1.26 per serving
Ingredients
- 100 g semisweet chocolate (for tempering) (high quality, 60% cacao)
- 25 g seed chocolate (finely chopped) (same semisweet chocolate, set aside for seeding)
- 43 g unsweetened chocolate (for fudge) (about 1.5 oz, chopped)
- 170 g dark chocolate (for brownie) (6 oz, chopped; can include the leftover 28 g from tempering)
- 196 g unsalted butter (5 oz for brownie + 56 g (½ stick) for fudge)
- 200 g granulated sugar (for fudge syrup)
- 340 g powdered (confectioners) sugar (6 oz for brownie + ~1 cup (120 g) for royal icing)
- 40 g corn syrup (light corn syrup for sugar shell)
- 100 g water (for sugar syrup)
- 180 ml whole milk (3/4 cup for fudge)
- 2 large egg yolks (save whites for royal icing)
- 2 large egg whites (for royal icing)
- 170 g all‑purpose flour (6 oz, high proportion for dense brownies)
- 1.5 tsp kosher salt
- 2 tsp pure vanilla extract
- few pinches natural food coloring (turmeric, spirulina, hibiscus) (for pink, green, blue candies; optional)
Instructions
Temper the chocolate for candy pieces
Place 75 g of the semisweet chocolate in a double boiler and melt, stirring gently, until it reaches 115 °F (46 °C). Remove from heat, add the 25 g seed chocolate, stir vigorously to bring temperature down to 81 °F (27 °C). Return briefly to heat and bring to 90 °F (32 °C). Keep the tempered chocolate in a warm place.
Time: PT15M
Temperature: 115°F
Pipe mini chocolate chips
Fit a piping bag with a 2 mm round tip, fill with the tempered chocolate, and pipe tiny dots onto a parchment‑lined sheet. Work quickly; the chocolate will set within minutes. Let set at room temperature until firm (about 30 min).
Time: PT30M
Make sugar‑corn‑syrup shell
Combine 200 g granulated sugar, 100 g water, and 40 g light corn syrup in a saucepan. Bring to a boil over medium heat, stirring until sugar dissolves, then boil without stirring for 1‑2 min until clear and slightly thick. Remove from heat and let cool to about 120 °F (49 °C).
Time: PT10M
Temperature: 120°F
Coat chocolate chips with candy shell
Using a small pastry brush or a spoon, dip each set chocolate dot into the warm syrup, ensuring a thin coating. Place back on parchment. Allow to dry 15 min, then repeat once more for a sturdier shell. Let dry completely (about 30 min total).
Time: PT30M
Prepare fudge glaze
In a saucepan melt 170 g dark chocolate with 140 g butter over low heat, stirring until smooth. Add 340 g powdered sugar, 180 ml milk, 1 tsp vanilla, and 43 g unsweetened chocolate. Cook, stirring, until mixture reaches 238 °F (115 °C). Immediately transfer to a clean bowl, add 56 g butter in pieces, let sit briefly, then stir gently until just combined and glossy.
Time: PT20M
Temperature: 238°F
Make brownie batter
Melt the remaining 170 g dark chocolate with 140 g butter in a double boiler. Remove from heat, whisk in 340 g powdered sugar, 2 egg yolks, 1 tsp vanilla, and 1.5 tsp kosher salt. Gradually add 170 g flour, mixing until just combined. The batter will look thick and slightly crumbly.
Time: PT15M
Bake brownies in water bath
Preheat oven to 325 °F. Place the batter in a parchment‑lined 9×13‑inch pan, then set the pan in a larger roasting pan filled with hot water (water bath). Bake for 25 min, or until a toothpick inserted near the center comes out with a few moist crumbs.
Time: PT25M
Temperature: 325°F
Cool and chill brownies
Remove the pan from the oven, let brownies cool on a rack for 15 min, then transfer to the refrigerator for 30 min to set the crumb and make cutting easier.
Time: PT45M
Assemble: glaze and candy pieces
Remove brownies from the pan, place on a cutting board, and spread a thin, even layer of the fudge glaze with an offset spatula. Immediately scatter the tempered chocolate candy pieces over the glaze, arranging them in a random “cosmic” pattern. Let the glaze set at room temperature (about 10 min) then refrigerate another 10 min before slicing.
Time: PT10M
Cut and serve
Using a sharp chef’s knife, cut the set brownies into 12 equal rectangles (approx. 4.4 cm × 8.6 cm). Serve at room temperature or chilled.
Time: PT5M
Nutrition Facts
- Calories
- 250
- Protein
- 3 g
- Carbohydrates
- 30 g
- Fat
- 12 g
- Fiber
- 2 g
Dietary info: vegetarian
Allergens: dairy, eggs, wheat, soy, corn
Ingredient Substitutions
- Instead of semisweet chocolate (for tempering): dark chocolate
- Instead of unsweetened chocolate (for fudge): baking chocolate
- Instead of dark chocolate (for brownie): semisweet chocolate
- Instead of unsalted butter: margarine
- Instead of granulated sugar: coconut sugar
- Instead of powdered (confectioners) sugar: icing sugar
- Instead of corn syrup: glucose syrup
- Instead of whole milk: half‑and‑half
- Instead of large egg whites: aquafaba
- Instead of all‑purpose flour: cake flour (use 1:1)
- Instead of kosher salt: table salt (reduce to 1 tsp)
- Instead of pure vanilla extract: vanilla bean paste
- Instead of natural food coloring (turmeric, spirulina, hibiscus): gel food coloring
Equipment Needed
- double boiler (or heat‑proof bowl over saucepan)
- kitchen scale
- thermometer (candy/instant‑read)
- mixing bowls (various sizes)
- whisk
- spatula (silicone)
- offset spatula (optional)
- piping bag with small round tip (≈2 mm)
- parchment paper
- baking sheet (full‑size)
- oven‑safe pan for water bath (e.g., 9×13 inch)
- cooling rack (optional)
- sharp chef’s knife
- cutting board
- small pastry brush (optional)
Critical Steps — Do Not Skip
- Tempering the chocolate to the correct temperature range (81‑90 °F).
- Cooking the fudge glaze to 238 °F without over‑stirring.
- Baking the brownies in a water bath at low temperature for an even, dense crumb.
- Coating the chocolate chips with a proper sugar‑corn‑syrup shell that dries solid.
Chef Tips from the Video
- Use a candy thermometer for both the syrup and fudge; temperature is the make‑or‑break factor.
- For brighter colors, add a pinch of natural pigment (turmeric for yellow, spirulina for green/blue) to the royal icing before piping.
- Press the brownie batter with an offset spatula to eliminate air pockets before baking.
Troubleshooting
Chocolate chips set too soft and melt when handling.
Make sure the tempered chocolate reaches 90 °F before piping and let the chips set at least 30 min on a cool surface.
Fudge glaze is grainy.
Avoid stirring once the mixture reaches 238 °F; if grainy, continue gentle stirring until crystals dissolve, or re‑heat to 240 °F and stir briefly.
Brownies are dry and crumbly.
Reduce butter by 2 tbsp as done, and bake in a water bath to keep moisture; do not over‑bake.
Sugar shell stays sticky and never hardens.
Boil the syrup to the correct stage (soft‑ball stage, 235‑240 °F) and allow it to cool to ~120 °F before coating; avoid excess corn syrup.
Storage
Refrigerator: Store in an airtight container for up to 5 days.
Freezer: Wrap tightly in plastic and freeze for up to 2 months; thaw in fridge before serving.
Room temperature: Not recommended; glaze may soften.
Make-Ahead Tips
- Temper the chocolate and pipe the chips a day ahead; store in a cool, dry place.
- Prepare the fudge glaze and refrigerate; gently re‑warm before spreading.
- Bake brownies and chill; they keep well refrigerated for several days.
Last updated: August 20, 2026






