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Slow-Cooker Flan

By Meaghen Walsh

Published on October 16, 2019

Time

2 to 3 hours on low

Yield

Serves 6 to 8

Slow cooker size

5 to 7 quarts

Slow-Cooker Flan

Ingredients

6 tablespoons water ⅔ cup (4 ⅔ ounces/132 grams) sugar 2 large eggs plus 3 large yolks1 ½ cups whole milk 1 (14-ounce) can sweetened condensed milk ¼ teaspoon grated lemon zest

Before You Begin

You will need an oval slow cooker for this recipe. Check the temperature of the custard after 2 hours and continue to monitor until it registers 180 degrees. The test kitchen's preferred loaf pan measures 8½ by 4½ inches, but you can substitute a 9 by 5-inch loaf pan. Serve the flan on a dish with a raised rim to contain the liquid caramel.

Instructions

  1. 1. Place ¼ cup water in large saucepan. Pour sugar into center of pan, taking care not to let sugar crystals touch pan sides. Gently stir with spatula to moisten sugar thoroughly. Bring mixture to boil over medium heat, without stirring, until it begins to turn golden, 4 to 7 minutes. Gently swirling pan, continue to cook until sugar is color of peanut butter, 1 to 2 minutes.
  2. Remove pan from heat and continue to swirl pan until sugar is reddish-amber and fragrant, 15 to 20 seconds. Immediately add remaining 2 tablespoons water (mixture will bubble) and swirl pan until water is incorporated. Pour caramel into 8½ by 4½-inch loaf pan; do not scrape out saucepan.
  3. Whisk eggs and yolks together in medium bowl. Whisk in milk, condensed milk, and lemon zest until incorporated, then pour into prepared pan. Fill slow cooker with ½ inch water (about 2 cups) and set pan in slow cooker. Cover and cook until center of flan jiggles slightly when shaken and registers 180 degrees, 2 to 3 hours on low.
  4. Transfer pan to wire rack and let cool to room temperature, about 2 hours. Cover with plastic wrap and refrigerate until well chilled, at least 8 hours or up to 4 days.
  5. To serve, slide paring knife around edges of pan. Invert serving dish on top of pan, and turn pan and dish over. When flan is released, remove loaf pan. Use rubber spatula to scrape residual caramel onto flan. Slice and serve.
Slow-Cooker Flan
Photography by Daniel J. van Ackere. Styling by Kendra McKnight.

Slow-Cooker Flan

Headshot of Meaghen Walsh
By Meaghen Walsh
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Time

2 to 3 hours on low

Yield

Serves 6 to 8

Slow cooker size

5 to 7 quarts

Ingredients

Ingredient check list

Ingredients

Ingredient check list

Ingredients

Ingredient check list

Why This Recipe Works

Flan is a classic Spanish dessert, slightly sweeter than a traditional baked custard, and with a crowning touch of thin, sweet caramel that pools over the dish once unmolded. To create our slow-cooker version, we opted for a base of sweetened condensed milk and whole milk. Mixing the dairy with a combination of whole eggs, egg yolks, and sugar resulted in a tender, rich custard. We tried to make our caramel topping in the microwave but could not achieve the right texture or color, so we moved it to the stovetop. A water bath ensured that the custard cooked evenly. 

Before You Begin

You will need an oval slow cooker for this recipe. Check the temperature of the custard after 2 hours and continue to monitor until it registers 180 degrees. The test kitchen's preferred loaf pan measures 8½ by 4½ inches, but you can substitute a 9 by 5-inch loaf pan. Serve the flan on a dish with a raised rim to contain the liquid caramel.

Instructions

  1. 1. Place ¼ cup water in large saucepan. Pour sugar into center of pan, taking care not to let sugar crystals touch pan sides. Gently stir with spatula to moisten sugar thoroughly. Bring mixture to boil over medium heat, without stirring, until it begins to turn golden, 4 to 7 minutes. Gently swirling pan, continue to cook until sugar is color of peanut butter, 1 to 2 minutes.
  2. Remove pan from heat and continue to swirl pan until sugar is reddish-amber and fragrant, 15 to 20 seconds. Immediately add remaining 2 tablespoons water (mixture will bubble) and swirl pan until water is incorporated. Pour caramel into 8½ by 4½-inch loaf pan; do not scrape out saucepan.
  3. Whisk eggs and yolks together in medium bowl. Whisk in milk, condensed milk, and lemon zest until incorporated, then pour into prepared pan. Fill slow cooker with ½ inch water (about 2 cups) and set pan in slow cooker. Cover and cook until center of flan jiggles slightly when shaken and registers 180 degrees, 2 to 3 hours on low.
  4. Transfer pan to wire rack and let cool to room temperature, about 2 hours. Cover with plastic wrap and refrigerate until well chilled, at least 8 hours or up to 4 days.
  5. To serve, slide paring knife around edges of pan. Invert serving dish on top of pan, and turn pan and dish over. When flan is released, remove loaf pan. Use rubber spatula to scrape residual caramel onto flan. Slice and serve.
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