This recipe makes 20 bars from a 9x13-inch pan, matching the yield in the source recipe (Bake or Break, last year). Active prep runs about 15 minutes, with the brownies in the oven for 22 to 26 minutes at 350°F (175°C). Bake or Break lists a total time of 41 minutes covering just the prep and bake; that figure doesn't include the cooling, ganache-setting, and chilling stages below, so plan for extra time beyond it (Bake or Break, last year).

Equipment: a 9x13-inch metal or glass pan, parchment paper, a large mixing bowl and whisk, a heatproof bowl for the ganache, and a small saucepan or microwave-safe bowl to heat the cream. Nothing specialized is needed beyond what's already in most kitchens.

Line the pan with parchment paper, leaving an overhang on two sides to lift the bars out later, and lightly grease any exposed metal (Bake or Break, last year). The recipe calls for butter that's melted and slightly cooled, meaning it should sit for a few minutes after melting until it's warm rather than hot; pouring it onto the eggs while it's still sputtering can start cooking them at the edges. The base also needs to cool completely before the ganache goes on, a separate stage from the active bake time above.

For a 9x13-inch pan:

Brownie base

• 226g (1 cup) unsalted butter, melted and slightly cooled
• 250g (1 1/4 cups) granulated sugar
• 150g (3/4 cup) packed light brown sugar
• 64g (3/4 cup) unsweetened cocoa powder, Dutch-process preferred
• 1/2 teaspoon salt
• 1 tablespoon vanilla extract
• 4 large eggs
• 120g (1 cup) all-purpose flour
• 2 tablespoons cornstarch

Ganache and topping

• 170g (1 cup) semisweet chocolate, chopped
• 120ml (1/2 cup) heavy cream
• Candy-coated mini chocolate chips, enough to cover the surface

Quantities and structure come from Bake or Break, last year. Dutch-process cocoa gives a deeper color and flavor than regular unsweetened cocoa, though the plain version works fine if that's what's in the pantry (Cooking With Karli, 2024). Cornstarch's role depends on whose copycat tradition gets followed: Bake or Break adds it for chewiness, while Cooking With Karli credits it with the soft texture her version is known for (Bake or Break, last year; Cooking With Karli, 2024).

Melted butter is the only fat in this version. There's no oil blend to balance against it, just butter, sugar, and eggs carrying the richness.

1. Whisk the melted butter with the granulated and brown sugar until smooth.
2. Add the eggs and vanilla, whisking just until combined.
3. Fold in the cocoa powder, flour, cornstarch, and salt until no dry streaks remain.

The batter should look glossy and uniform, falling off the whisk in a thick ribbon rather than pouring thin. If it looks dull or separated after step 1, the sugar hasn't fully dissolved into the fat yet; keep whisking before moving on.

Mix only until the dry ingredients disappear in step 3. Overworking the batter at this stage makes brownies tougher, not fudgier.

Other copycat versions push the eggs harder. Cooking With Karli beats butter and sugar on high for five minutes, then mixes in eggs, corn syrup, and vanilla for another five, building toward an extra-fudgy density (Cooking With Karli, 2024). This recipe keeps mixing brief instead. That's the method followed here, not a universal rule about what makes brownies dense.

1. Pour the batter into the prepared pan.
2. Bake at 350°F (175°C) for 22 to 26 minutes, checking at the earlier end first.
3. Test with a toothpick in the center. A few moist crumbs clinging to it means the brownies are done (Bake or Break, last year; Cooking With Karli, 2024).
4. Immediately after pulling the pan from the oven, drop it on the counter a few times to release trapped air (Cooking With Karli, 2024).

Let the pan cool completely before moving on to the ganache.

Checking at the earlier end of the range is practical advice rather than a documented step in the source recipe; ovens vary enough that a minute or two makes a real difference. If the center still looks wet or jiggles heavily at the full 26 minutes, give it another minute or two and retest rather than pulling it early just to hit a number. A completely clean toothpick is worth noting for next time: it's a sign the batch may be overbaked, not a target to aim for.

1. Finely chop the semisweet chocolate and place it in a heatproof bowl.
2. Heat the heavy cream until hot, then pour it over the chocolate. Let it sit undisturbed for 2 minutes before stirring, which gives the chocolate time to soften evenly (Bake or Break, last year).
3. Stir until smooth and glossy. A double boiler also works: melt the chocolate first, then whisk in the cream slowly until fully combined (Broma Bakery, 2024).
4. Pour the ganache over the cooled brownies and spread it to the edges in one even layer.

Let the ganache set at room temperature for about 20 minutes, or chill the whole pan for 30 minutes to an hour for a firmer set (Broma Bakery, 2024; Bake or Break, last year).

Once the ganache has set for about 20 minutes, scatter the candy-coated mini chips over the top (Broma Bakery, 2024). Cover the surface lightly and evenly rather than clustering them in the center; these cosmic brownies with candy-coated chocolate chips depend on an even scatter for that signature look.

The chips can be difficult to find. Cooking With Karli notes they're not always stocked with the regular baking chocolate, and the recipe's author found hers at a local Walmart (Cooking With Karli, 2024).

• Dry or crumbly brownies: usually points to a bake that ran long. Pull the pan a minute or two earlier next time and stop at moist crumbs rather than a clean tester.
• Gooey or sunken center: the batter likely needed more time. Give it another minute or two at 350°F (175°C) and retest; a slightly underbaked center often firms up as the pan cools.
• Domed top or visible air pockets: tap the pan on the counter a few times right after it comes out of the oven, before it starts to cool (Cooking With Karli, 2024).
• Soft or wet ganache after 30 minutes at room temperature: it needs cold, not more time. Move the pan to the refrigerator for 20 to 30 minutes before scattering on the candy chips.

1. Once the ganache has set, chill the pan for 30 minutes to an hour, or freeze it for about 30 minutes for cleaner slices (Bake or Break, last year; Cooking With Karli, 2024).
2. Cut with a clean knife, wiping the blade between slices.
3. For 20 rectangular pieces, cut a 5-by-4 grid (5 columns, 4 rows); the source recipe yields 20 bars but doesn't specify a cutting pattern, so this grid is a practical suggestion (Bake or Break, last year).
4. Let cut bars sit a few minutes at room temperature before serving. They're easiest to portion cold but taste best once they've warmed up a little (Bake or Break, last year).

Stored airtight, this batch holds up at room temperature for up to 3 days, in the refrigerator for up to 5 days, or in the freezer for up to 2 months (Bake or Break, last year).

Broma Bakery's version of copycat Little Debbie Cosmic Brownies is built without corn syrup, hydrogenated oils, or preservatives (Broma Bakery, 2024), a flavor and ingredient choice rather than a shelf-life upgrade. Those storage windows above apply to this homemade version specifically; for the best texture, keep the bars airtight and let refrigerated pieces sit out for a few minutes before serving.

Getting a brownie to taste "Cosmic" depends on the whole process rather than one swap: a base mixed just until combined, a bake pulled at moist crumbs instead of a fixed number, and a ganache rested over chocolate before stirring.

For the next batch, write down the actual bake time, the pan material, and whether the center had fully set before the ganache went on. Those notes matter more than any single ingredient swap, because they're specific to the oven and pan actually in use. The recipe above is a practical starting point.