Lemon Bars · Classic Shortbread Crust
Classic Lemon Bars with Shortbread Crust
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Before you start
Gather your ingredients
Weights from USDA FoodData Central cup weights; counted things stay as counts.
Swaps for all-purpose flour
Instead of all-purpose flour
- Gluten-free 1:1 baking flour: The same amount, a blend that includes xanthan gum. A little grittier and more crumbly, browns faster and dries out sooner.
- Bread flour: The same amount. More gluten: chewier cookies and bread, tougher cakes.
- Whole wheat flour: Up to half of the flour. Nuttier, darker and denser.
All 4 swaps for all-purpose flour
Cooking for an allergy? Check every label.
Swaps for powdered sugar
Instead of powdered sugar
- Homemade powdered sugar: 1 cup granulated sugar + 1 tbsp cornstarch, blended. Slightly grainier in uncooked frosting; fine in glazes and for dusting.
Swaps for kosher salt
Instead of salt
- Table salt or fine sea salt: About half as much as Diamond Crystal kosher, about ¾ as much as Morton kosher. The same saltiness when measured this way.
- Salt by weight: 1 tsp is about 6 grams of table salt, 5 grams of Morton kosher, 3 grams of Diamond Crystal kosher. The most reliable way to swap, especially in baking and brines.
Swaps for unsalted butter
Instead of butter
- Salted butter: The same amount, with about ¼ tsp less salt per stick (½ cup) elsewhere in the recipe. Nothing noticeable once you cut the salt.
- Plant-based butter sticks: The same amount. The closest swap.
- Refined coconut oil: The same amount: solid when the butter is soft or cold, melted when it is melted. It is all fat, so bakes are a bit more tender and rich, with no butter flavor.
Cooking for an allergy? Check every label.
Swaps for granulated sugar
Instead of sugar
- Less sugar: Up to ¼ less in cookies, muffins and quick breads. Less browning and spread, a drier, more cake-like texture, and bakes go stale sooner.
- Brown sugar: The same amount, packed. Moister and chewier, with a caramel flavor and darker color.
- Coconut sugar: The same amount. Darker and caramel-like, a little less sweet; cookies spread slightly less.
Swaps for all-purpose flour
Instead of all-purpose flour
- Gluten-free 1:1 baking flour: The same amount, a blend that includes xanthan gum. A little grittier and more crumbly, browns faster and dries out sooner.
- Bread flour: The same amount. More gluten: chewier cookies and bread, tougher cakes.
- Whole wheat flour: Up to half of the flour. Nuttier, darker and denser.
All 4 swaps for all-purpose flour
Cooking for an allergy? Check every label.
Swaps for salt
Instead of salt
- Kosher salt: About twice as much Diamond Crystal, or about 1¼ times as much Morton. The same saltiness when measured this way.
- Salt by weight: 1 tsp is about 6 grams of table salt, 5 grams of Morton kosher, 3 grams of Diamond Crystal kosher. The most reliable way to swap, especially in baking and brines.
Swaps for eggs
Instead of eggs
- Flax egg: 1 tbsp ground flaxseed + 3 tbsp water for each egg. Binds well but gives less lift, so bakes are a little denser and flatter, with a mild nutty taste and brown flecks.
- Chia egg: 1 tbsp chia seeds + 3 tbsp water for each egg. Works like a flax egg: good binding, little lift, slightly denser crumb.
- Unsweetened applesauce: ¼ cup for each egg. Moister and denser, with a soft, slightly gummy crumb if you swap more than one egg.
Cooking for an allergy? Check every label.
Swaps for lemon zest
Instead of citrus zest
- Another citrus zest: The same amount. A different citrus aroma; any of them brightens a dish.
- Dried citrus peel: 1 tsp dried for each 1 tbsp fresh zest. Milder and a little bitter.
- Lemon or orange extract: About ¼ tsp extract for each 1 tsp zest, to taste. Strong citrus flavor, no texture.
Swaps for lemon juice
Instead of lemon juice
- Lime juice: The same amount. A different, more floral aroma; works almost everywhere.
- Bottled lemon juice: The same amount. More sour and flatter; fine in cooking and baking, less bright in dressings and drinks.
- White wine vinegar or white vinegar: Half as much. Sharper, with no citrus aroma.
Swaps for powdered sugar
Instead of powdered sugar
- Homemade powdered sugar: 1 cup granulated sugar + 1 tbsp cornstarch, blended. Slightly grainier in uncooked frosting; fine in glazes and for dusting.
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Line (how to line a pan)
Line a pan Cover the bottom (and sometimes sides) of a pan with parchment or foil so food doesn't stick and lifts out easily. 1. For a sheet pan, tear parchment the size of the pan and lay it flat.2. For a round cake pan, trace the bottom on parchment, cut the circle out and press it in.3. For brownies and bars, leave two long sides hanging over to make handles (a "sling").4. A little grease under the paper holds it in place. Done when: The paper lies flat with no folds where the batter could run under it. How to line a baking pan with parchment: mistakes to avoid350°F
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whisk (how to whisk)
Whisk Beat ingredients with a whisk to mix them smoothly or to add air. 1. Use a bowl big enough to whisk without splashing; set it on a damp towel to stop it spinning.2. Hold the whisk loosely and move it in quick circles or side to side, touching the bottom.3. For lumpy mixtures, add liquid a little at a time and whisk after each.4. For sauces on the stove, keep the whisk moving across the whole bottom of the pan. Done when: The mixture is even with no lumps or streaks of egg. How to whisk: mistakes to avoidStep 6 of 11
Whisk (how to whisk)
Whisk Beat ingredients with a whisk to mix them smoothly or to add air. 1. Use a bowl big enough to whisk without splashing; set it on a damp towel to stop it spinning.2. Hold the whisk loosely and move it in quick circles or side to side, touching the bottom.3. For lumpy mixtures, add liquid a little at a time and whisk after each.4. For sauces on the stove, keep the whisk moving across the whole bottom of the pan. Done when: The mixture is even with no lumps or streaks of egg. How to whisk: mistakes to avoidStep 7 of 11
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All done
Enjoy!
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