Butter Tarts

Cultural Context

Butter tarts are a Canadian baking favorite: individual pastry shells with a sweet, buttery filling. Families differ on whether to add raisins or leave them plain. This plain, maple-sweetened version follows Canadian chef Deborah Reid's recipe for King Arthur Baking; Elizabeth Baird's corn-syrup version and Meredith Laurence's recipe provide comparisons for the traditional style.

Ingredients

Main Components

• 270 g (2¼ cups) all-purpose flour
• ¼ teaspoon table salt
• 113 g (½ cup) unsalted butter, cold and cubed
• 1 large egg
• 1 teaspoon white vinegar
• 30–60 ml (2–4 tablespoons) cold water
• 15 g (2 tablespoons) extra flour, for rolling as needed
• 5 g (1 teaspoon) extra unsalted butter, for greasing

For the Sauce/Garnish

Butter-tart filling; no garnish needed.

• 2 large eggs
• 106 g (½ cup packed) light brown sugar
• ½ teaspoon table salt
• 156 g (½ cup) pure maple syrup
• 2 teaspoons white vinegar
• 57 g (¼ cup) unsalted butter, melted and cooled until lukewarm
• ½ teaspoon vanilla extract

Substitutions:

• White vinegar → the same volume of fresh lemon juice; the acidity remains, with a faint citrus note.

Equipment

• Standard 12-cup metal muffin pan
• Mixing bowls and fork or pastry blender
• Whisk or electric hand mixer
• Rolling pin and 4-inch (10 cm) round cutter
• Cooling rack and thin offset spatula
• Instant-read thermometer

Instructions

Preparation (Active time: 30 min)

1. Make the dough: Mix flour and salt; cut in cold butter until crumbly. Beat the egg with vinegar and 2 tablespoons water. Stir into the flour, adding remaining water only as needed to gather the dough. Flatten, wrap, and refrigerate for 1 hour.
2. Line the pan: Heat the oven to 375°F (190°C). Grease the muffin cups. Roll pastry ⅛ inch (3 mm) thick on the floured surface; cut twelve 4-inch circles, gently rerolling scraps. Press into the cups without stretching. Refrigerate while making the filling.

Cooking (Active time: 5 min)

3. Fill: Beat filling eggs, sugar, and salt together, then mix in syrup, vinegar, melted butter, and vanilla. Divide among shells, filling no more than two-thirds full.
4. Bake: Bake for 20–25 minutes until golden with bubbling filling. Check that the center filling reaches at least 160°F (71°C); extend baking if necessary. Shield browned edges loosely with foil if needed.

Assembly & Finishing

5. Cool: Set the pan on a rack. Allow about 40 minutes for the tarts to cool completely; the filling settles as it cools. Loosen edges with a thin spatula and gently lift out. Allow 5 minutes of active time for unmolding and serving.
6. Serve: Arrange on a platter, with napkins or small plates for the flaky crumbs. The filling is sticky, so let it cool before taking a bite.

Food Safety & Storage

• Minimum safe internal temperature: 160°F (71°C) in the egg filling. Do not taste raw dough or filling; uncooked flour and eggs can carry harmful bacteria.
• Storage: Refrigerate in a covered container at 40°F (4°C) or below within 2 hours of baking, or within 1 hour above 90°F (32°C). Use within 4 days.
• Freezing: Freeze cooled tarts individually, then pack airtight for up to 2 months. Thaw in the refrigerator.
• Reheating: These can be eaten cold. If reheating leftovers, warm in a 325°F (165°C) oven until the center reaches 165°F (74°C), shielding pastry as needed. Let the hot sugar filling cool before eating.

Serving Suggestions

• Serve one tart with unsweetened tea or coffee.
• Bring a chilled batch to a gathering and put out small quantities as needed.
• Serve plain so the pastry and maple filling remain the focus.

Scaling Notes

Half recipe (½×): Make 6 tarts. For the dough, beat one egg and weigh out half; use one whole egg in the filling. Keep the same pastry thickness and begin checking at 20 minutes.

Double recipe (2×): Use two standard muffin pans. Keep the second batch chilled while the first bakes so the pastry stays firm. Allow extra elapsed time for sequential baking.

Chef's Notes

• Sourcing: Choose pure maple syrup; pancake syrup has a different flavor and composition.
• Make-ahead: Refrigerate wrapped dough for up to 24 hours. Let it soften just enough to roll without cracking.
• Variations: Raisin-filled butter tarts are another familiar Canadian style; this recipe keeps the filling plain, as pictured.
• Common pitfalls: Overfilled shells can bubble over and stick to the pan. Patch cracks before filling and avoid stretching dough into the cups.
• Timing: The total includes dough chilling, baking, and cooling; ovens and room temperature affect the final cooling time.
• Richness: This is an indulgent dessert, high in saturated fat and added sugar. One tart is the serving used for the estimates below.

Nutrition Information (Optional)

Per serving: approximately 265 kcal, estimated; excludes rolling flour and pan grease.

• Protein: 4 g | Fat: 13 g | Carbohydrates: 33 g | Fiber: 1 g
• Saturated fat: approximately 8 g | Sodium: approximately 170 mg | Added sugars: approximately 17 g
• Estimate basis: butter contributes about 87 g saturated fat per batch and eggs about 5 g, divided by 12. Brown sugar plus the sugar in maple syrup contributes about 206 g added sugars per batch, divided by 12. Salt contributes about 1,725 mg sodium and eggs roughly 210 mg per batch, with small amounts from other ingredients.

Sources

• King Arthur Baking: Classic Butter Tarts, by Deborah Reid: primary ingredient ratios and baking method.
• Tasting Table: Canadian Butter Tarts, adapted from Elizabeth Baird: traditional pastry, corn-syrup filling, and lemon-juice comparison.
• Blue Jean Chef: Butter Tarts, by Meredith Laurence: Canadian context and comparison of plain and raisin styles.
• Hero image source: King Arthur Baking.
• FoodSafety.gov: Safe Minimum Internal Temperatures.
• USDA: Leftovers and Food Safety.

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Version History:

• v1 (2026-09-18): Initial recipe adaptation by @Codex.

Credits:

• Recipe adaptation: @Codex, following Deborah Reid / King Arthur Baking, with comparison research from Elizabeth Baird / Tasting Table and Meredith Laurence / Blue Jean Chef. Safety temperatures, conservative storage guidance, and estimated cooling time added for the library.
• Testing: @Codex performed source, ingredient, and recipe-validator checks; this recipe has not been kitchen-tested by this automation.
• Verification: @Coordinator is the required workflow attribution; no independent human tasting is claimed.
• Food safety and storage: USDA and FoodSafety.gov guidance, linked above.
• Photography: King Arthur Baking, publisher image; copyright remains with the rights holder. Original image, downloaded unchanged; the HTML renderer may downscale it. No open license claimed.

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Recipe Location: /Recipes/canadian/canadian_butter-tarts_v1.md
Images Location: /Images/butter-tarts/