Sour Cream Quiche Recipe: Rich Custard With Flaky Pastry

This quiche delivers a flaky crust with a rich, velvety sour cream custard that sets perfectly every time.

I perfected this recipe by ensuring the pastry stays crisp while the filling bakes to creamy perfection. The sour cream adds depth you won’t find in ordinary versions.

Ingredients for Sour Cream Quiche

Pantry staples and a few fresh items for that perfect flaky crust and creamy filling.

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The butter needs to be cold—Land O’Lakes or Kerrygold if you want the good stuff. I keep a stick in the freezer just for pie crust. The flour? King Arthur all-purpose is my go-to, but store brand works fine. For the sour cream, full-fat is non-negotiable (trust me on this). Daisy or Breakstone’s are solid choices at most grocery stores.

No Swiss cheese? Gruyère melts beautifully and has a similar nuttiness. Out of cheddar? Pepper Jack adds a nice kick. Want to keep it vegetarian? Skip the bacon entirely or swap in vegetarian bacon bits. The milk can be any kind you have—whole, 2%, even half-and-half for extra richness. The nutmeg is subtle but freshly grated makes a difference.

The crust can be made a day ahead—just wrap it tight in plastic. Leftovers keep 3-4 days in the fridge and reheat beautifully. Freeze slices for up to 2 months (perfect for quick breakfasts). Always let it cool completely before slicing.

Step-by-Step Instructions for Sour Cream Quiche

Here’s how to nail that flaky crust and creamy custard without the fuss.

Step 1: Make the Flaky Pie Crust

In a food processor, pulse the 1.5 cups All-Purpose Flour and 0.5 tsp Salt to combine. Add the 0.5 cup Unsalted Butter (cold and cubed) and pulse until the mixture resembles coarse crumbs with pea-sized butter pieces.

With the processor running, slowly add the 6 tbsp Ice Water one tablespoon at a time until the dough just comes together. It should hold when pressed but not be sticky. Turn it out onto a lightly floured surface, shape into a disk, wrap in plastic, and refrigerate for 30 minutes—this chills the butter so it creates steam during baking for maximum flakiness.

Step 2: Blind Bake the Crust

Roll the chilled dough out on a floured surface to a 12-inch circle and transfer it to a 9-inch pie dish. Crimp the edges decoratively, then prick the bottom all over with a fork to prevent air bubbles. Freeze the crust for 15 minutes to firm it up before baking.

Preheat your oven to 375°F. Line the crust with parchment paper and fill with pie weights or dried beans. Bake for 15 minutes, then remove the weights and parchment. Bake for another 5-7 minutes until the bottom is just beginning to turn light golden brown. This prevents a soggy bottom when you add the filling.

Step 3: Prepare the Rich Custard Filling

In a large bowl, whisk together the 4 whole Large Eggs, 1 cup Sour Cream, and 0.5 cup Whole Milk until smooth and fully combined. Stir in the 1.5 cups Shredded Swiss Cheese, 0.5 cup Shredded Cheddar Cheese, 0.25 tsp Ground Nutmeg, and 0.25 tsp Black Pepper.

The sour cream gives this quiche its signature richness and tang. I always use full-fat for the creamiest texture. Make sure your eggs are at room temperature—they’ll incorporate more evenly into the custard without curdling.

Step 4: Assemble and Bake the Quiche

Crumble the 4 slices Cooked Bacon and sprinkle it evenly over the bottom of the pre-baked crust. Pour the custard mixture over the bacon, filling the crust about three-quarters full. Sprinkle the 0.25 cup Green Onions over the top for a pop of color and freshness.

Bake at 375°F for 35-40 minutes until the center is just set and the top is golden brown. You want a slight jiggle in the center when you gently shake the pan—it will finish setting as it cools. Let it rest for 10 minutes before slicing to allow the custard to set fully.

Pro Cooking Tips for Great sour cream quiche

Perfect Crust Secrets

Keep your butter ice-cold and work quickly to prevent the fat from melting into the flour. I cut my butter into ½-inch cubes and freeze them for 10 minutes before starting. The colder the butter, the flakier your crust will be. 💡

Blind Baking Tips

Use dried beans or rice for pie weights if you don’t have ceramic ones. Press them firmly into the crust to prevent air bubbles. I learned this trick at my first French pastry class—simple but effective.

Don’t skip the 15-minute freeze before blind baking. This extra chill prevents shrinking and helps maintain those beautiful crimped edges.

Custard Consistency

Whisk your eggs and dairy until just combined—overmixing incorporates too much air, which can lead to a puffy, uneven texture. The sour cream adds richness, so full-fat is essential for that velvety finish.

Avoiding Soggy Bottoms

Brush the pre-baked crust with a thin layer of beaten egg white before adding the filling. This creates a barrier that keeps the custard from making the pastry soggy. It’s a game-changer for quiches and custard pies.

Baking Precision

Look for a golden-brown top with a slight jiggle in the center. Overbaking dries out the custard. I pull mine at 35 minutes and let it carry over cook while resting. 🔥

Frequently Asked Questions