Gooey cookie-and-brownie bars topped with candy eyeballs and a spooky red gel drizzle—perfect for Halloween parties or Friday the 13th movie nights.

Scale

Nonstick spray or parchment

16 oz refrigerated chocolate chip cookie dough

1 box brownie mix (for 8–9 in pan)

Eggs, oil, and water as directed on brownie mix

1/2 cup chocolate chips (optional)

1/2 cup vanilla or chocolate frosting (for sticking eyes)

24–36 candy eyeballs

2–3 tbsp red decorating gel or warmed strawberry jam

Halloween sprinkles or flaky salt (optional)

1. Preheat oven to 350°F (175°C). Line an 8×8 or 9×9 in pan with parchment and spray lightly.

2. Press cookie dough evenly into the bottom of the pan to form a uniform layer.

3. Prepare brownie batter per box directions; fold in chocolate chips if using.

4. Spread brownie batter over the cookie layer, smoothing to the corners.

5. Bake 35–40 minutes, until edges are set and a toothpick comes out with fudgy crumbs.

6. Cool in pan on a rack until fully set, about 45–60 minutes.

7. Lift out, then spread a thin swipe of frosting where eyeballs will sit.

8. Press candy eyeballs onto the surface; drizzle with red gel for a spooky effect.

9. Add sprinkles or a light pinch of flaky salt if desired; chill 10 minutes to set.

10. Slice into 16 squares; store airtight at room temp 2–3 days or refrigerate up to 1 week.