Magic Cookie Bars

Name: Magic Cookie Bars
Prep time: 15 min
Cook time: 28 min
Total time: 43 min
Yield: 24 servings
Cuisine: American
Ingredients: ½ cup (1 stick) (113 g) unsalted butter, melted; 1½ cups (150 g) graham cracker crumbs, fine crumbs (about 10 full sheets, crushed); 2 tablespoons (25 g) granulated sugar; ¼ teaspoon (1½ g) fine salt; 1½ cups (255 g) semisweet chocolate chips; 1½ cups (135 g) sweetened shredded coconut, lightly packed; 1 cup (115 g) pecans, coarsely chopped; 14 ounce can (397 g) sweetened condensed milk, one full can, shaken; 1 teaspoon (5 ml) pure vanilla extract; flaky sea salt, for sprinkling, to taste (optional)

From the MyKitchenBank Kitchen

Buttery graham cracker crust topped with chocolate chips, sweet coconut and toasty pecans, all bound together with sweetened condensed milk that bakes into a chewy, caramelized layer. No mixer needed, and just one pan.

Prep: 15 min
Cook: 28 min
Wait: 3 hr
Total: 3 hr 43 min
Makes: 24 bars (one 9×13-inch pan)

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Steps

Before you start

Position an oven rack in the center and preheat to 350°F (175°C).
Line the pan with parchment, leaving an overhang on the two long sides, so the bars lift out cleanly.
Plan for at least 3 hours of cooling. Warm bars are gooey and will fall apart if cut too soon.
Use sweetened condensed milk, not evaporated milk. They are not interchangeable.

1
Prepare the panOven 350°F / 175°C
- Position a rack in the center of the oven and heat to 350°F (175°C).
- Line a 9×13-inch (23×33 cm) metal pan with parchment, leaving 2 inches of overhang on the two long sides.
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Ready when: Parchment lies flat against the bottom and long sides.
Tip: A light dab of butter in the corners helps the parchment stay put.
2
Mix the crust
- Melt the butter in a medium microwave-safe bowl in 20-second bursts (or in a small saucepan).
- Stir in the graham cracker crumbs, sugar and salt with a fork until all crumbs look evenly damp, like wet sand.
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Ready when: A pinch squeezed in your fist holds together.
Tip: If the crumbs are dry in spots, stir more rather than adding extra butter.
3
Press the crust
- Tip the crumbs into the pan and spread evenly.
- Press firmly into a compact, level layer, pushing into the corners, using the flat bottom of a measuring cup.
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Ready when: The surface is smooth and firm, with no loose crumbs.
Tip: A firmly packed crust won't crumble when you slice the bars.
4
Pre-bake the crustOven 350°F / 175°C
- Bake the crust at 350°F (175°C) for 8 minutes, just until it smells toasty and looks set.
- Remove from the oven and leave the oven on.
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Ready when: Crust looks dry and slightly darker at the edges.
5
Add chocolate and coconut
- Sprinkle the chocolate chips evenly over the warm crust.
- Scatter the coconut over the chocolate, then the chopped pecans, in even layers all the way to the edges.
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Ready when: The crust is fully and evenly covered, with no bare patches.
Tip: The warm crust lightly softens the chips, helping them cling.
6
Pour the condensed milk
- Stir the vanilla into the condensed milk in the can.
- Slowly drizzle it over the toppings, working back and forth and reaching the edges and corners.
- Do not stir or press.
- Sprinkle with flaky salt, if using.
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Ready when: The surface is mostly moistened with thin lines of milk, with no thick pools.
Tip: Use a spatula to scrape the can clean. Every drop helps hold the bars together.
7
Bake the barsOven 350°F / 175°C
- Bake at 350°F (175°C) for 20 to 22 minutes, rotating the pan after 10 minutes, until the edges are bubbling and deep golden brown and the coconut on top is toasted.
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Ready when: The edges are deep golden and bubbling, and the center looks set, not wet and glossy.
Tip: Slightly underbaked bars stay gooey, while overbaked ones turn hard, so pull them out when the edges are deep golden.
8
Cool completely
- Set the pan on a wire rack and cool at room temperature for 2 hours until barely warm, then refrigerate for 1 hour to firm up completely.
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Ready when: The bars feel firm and cool when touched, and the center doesn't jiggle.
Tip: Do not cut early. The caramelized milk needs time to set.
9
Slice and serve
- Run a thin knife around the edges, then lift the slab out using the parchment.
- Place on a cutting board and cut into 4 rows by 6 rows to make 24 bars, wiping the knife clean between cuts.
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Ready when: Cuts are clean with distinct layers.
Tip: If the slab is sticky, chill it for 15 more minutes before cutting.

Good to know

Tips

Crush graham crackers in a zip bag with a rolling pin, or pulse in a food processor, until the crumbs are fine and sandy.
Toast the pecans and coconut for 5 minutes at 350°F (175°C) before layering to deepen their flavor.
Use a metal pan. Glass bakes the edges faster and can burn the bottom.
For clean slices, use a sharp knife and wipe it between cuts.

Make ahead

"Bake, cool and slice the bars up to 3 days ahead. Store them airtight, then bring to room temperature before serving for the best chew."

Storage & reheating

"Room temperature in an airtight container, layered with parchment, for up to 4 days. Refrigerate for up to 1 week. Freeze for up to 3 months, wrapped well, and thaw at room temperature for about 1 hour. No reheating is needed, though 10 seconds in the microwave makes them warm and gooey."

Substitutions

pecans → walnuts or almonds. Use the same weight, chopped. Or leave out for a nut-free version and add 1/2 cup (85 g) extra chocolate chips.
graham cracker crumbs → crushed digestive biscuits or vanilla wafers. Use the same weight of fine crumbs.
semisweet chocolate chips → butterscotch chips or a mix of white and semisweet chips. Use the same total amount.
sweetened shredded coconut → extra chopped pecans or rolled oats. Use 1 cup (100 g) for a coconut-free version. Bars will be slightly less chewy.