Prepare Your Oven and Crust
Preheat your oven to 375 degrees Fahrenheit first. Place the pie crust in your dish carefully. Press it firmly against the sides and bottom. Prick the bottom with a fork several times. This prevents bubbling during the baking process later.
Prepare the Crab Filling
Check your crab meat for any shell pieces. Remove any shells you find while checking thoroughly. Pat the crab meat dry with paper towels. Spread the crab evenly across the pie crust. Sprinkle both cheeses on top of the crab.
Make the Custard Mixture
Crack eggs into your mixing bowl now carefully. Add cream and milk to the eggs together. Whisk everything until it's smooth and well combined. Season with salt, pepper, and nutmeg generously. The mixture should look pale yellow and frothy.
Assemble and Bake
Pour the custard mixture over the crab slowly. Make sure it covers everything evenly and completely. Sprinkle chopped chives on top for extra flavor. Place the quiche in your preheated oven carefully. Bake for 35 to 40 minutes total time. The center should be just slightly jiggly still.
Cool and Serve
Remove the quiche from the oven using mitts. Let it cool for 10 minutes before cutting. This helps the custard set properly for serving. Cut into wedges and serve warm or room temperature.