Soft cocoa sugar-cookie bars with a thin dark-chocolate finish.
The feature to preserve is the shaping: Press the thick dough evenly into a lined 9-inch square metal pan. Level the corners and center; do not spread it into a larger pan.
Before mixing, measure without packing the flour. Cocoa is an additional dry ingredient. This version replaces ¼ cup of flour with cocoa rather than adding it on top of the original flour amount.
Use the observable baking cues as well as the timer. Melt chocolate gently and spread a thin coat over the cooled slab. Let set about 30 minutes, then cut sixteen squares.
Chocolate Sugar Cookie Bars
Per tray: 25–26 minutes · 2 batches, about 12 pieces per 13 × 18-inch half-sheet pan.
Allow about 167 minutes: 25 hands-on, 0 required chilling, 52 baking all batches sequentially, 60 cooling including pan rest, and 30 finishing/set time. Preheat during preparation or final chilling. Extra trays and optional decoration add time.
Kitchen tools you’ll need
- US measuring cups and spoons or kitchen scale
- Mixing bowl and silicone spatula
- Mixing bowls
- Electric hand mixer
- Offset spatula
- Cooling rack
- Sharp knife
Soft cocoa sugar-cookie bars with a thin dark-chocolate finish.
Ingredients
Scale ingredients and US equivalents, including eggs; weigh beaten egg for fractional batches. Keep piece size, thickness, oven temperature and baking time per tray unchanged. Extra trays increase whole-batch time.
Cookie dough
Chocolate finish
Instructions
Mixing
- Make the doughCream butter and sugar; beat in egg, yolk and vanilla. Whisk flour, cocoa, starch, leaveners and salt and mix in gently.
Thermal management
- Prepare for shapingNo dough chilling is required. Line a 9-inch square metal pan with a parchment sling and preheat the oven while mixing.
Shaping
- Shape the batchPress the thick dough evenly into a lined 9-inch square metal pan. Level the corners and center; do not spread it into a larger pan.
Baking
- Bake to the right textureBake the single 9-inch square pan at 350°F (175°C) for 25–26 minutes. The edges should be lightly golden and the center set but still soft; it firms in the pan while cooling.
Cooling
- Cool before servingCool fully in the pan on a rack, about 60 minutes. Lift by the parchment and cut into 16 squares with a clean sharp knife.
Finishing
- Add the finishMelt chocolate gently and spread a thin coat over the cooled slab. Let set about 30 minutes, then cut sixteen squares.
Chef’s Science & Pro Tips
Use cocoa for flavor
Cocoa is an additional dry ingredient. This version replaces ¼ cup of flour with cocoa rather than adding it on top of the original flour amount.
Shape with purpose
Press the thick dough evenly into a lined 9-inch square metal pan. Level the corners and center; do not spread it into a larger pan. Bake similar-sized pieces together.
Serving and texture
Soft cocoa sugar-cookie bars with a thin dark-chocolate finish. Let the crumb cool fully before judging texture; pack only once the finish has set.
Storage & Make-Ahead
| Method | How long | What to do |
|---|---|---|
| Room temperature | 3–4 days | Cool completely and seal in an airtight container. Keep unfrosted cookies separate from moist or strongly flavored treats. |
| Refrigeration | Raw dough: up to 2 days | Cover raw dough tightly. Refrigerating plain baked cookies is unnecessary and can dry them; let chilled dough become workable before shaping. |
| Freeze raw | Up to 2 months | Freeze the raw dough tightly wrapped for up to 2 months. Thaw overnight in the refrigerator, press into the specified pan, and bake as directed. |
| Freeze baked | Up to 2 months | Freeze fully cooled, plain cookies in a sealed container with parchment between layers. |
| Restore | 30–60 minutes | Thaw sealed; do not oven-warm the chocolate finish. |
Notes
- US measures are shown first; gram weights help avoid packed flour. Spice weights are approximate: use measuring spoons for small quantities. Egg weights exclude shells. Temperatures are for a conventional oven.
Nutrition
Approximate nutrition per serving calculated from ingredient weights divided by 16; required fillings and toppings included, optional decorations excluded. Brands, unused coating and actual serving size affect the estimate.
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Frequently Asked Questions
A few helpful answers before you bake.
Can I simply add cocoa without changing flour?
Cocoa is an additional dry ingredient. This version replaces ¼ cup of flour with cocoa rather than adding it on top of the original flour amount.
What makes chocolate sugar cookie bars different?
Soft cocoa sugar-cookie bars with a thin dark-chocolate finish. Use cocoa for flavor. Follow the specified technique rather than substituting the shaping method from a different sugar-cookie recipe.
Can I make chocolate sugar cookie bars ahead?
Prepare with the storage instructions below. Complete the required finish after the base has cooled. Melt chocolate gently and spread a thin coat over the cooled slab. Let set about 30 minutes, then cut sixteen squares.
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