In the bottom pot of a double-boiler, bring a few inches of water to a boil, then reduce heat to low to keep water at a simmer. Whisk egg yolks, sugar, lemon juice, and zest into the top bowl of double boiler and place on top of bottom pot of simmering water.
Whisk lemon curd continuously so the egg yolks don't curdle. Continue whisking over simmering water until curd becomes smooth and thickened, about 8-10 minutes. Remove curd from heat and immediately add butter, 1 tablespoon at a time whisking well after each addition.
Allow lemon curd to cool slightly, then place plastic wrap directly on surface of lemon curd and place in refrigerator.
Overnight Oats
In a large mason jar, combine oats, milk, yogurt, honey, and vanilla. Screw lid on and shake to combine. Let chill in fridge overnight or at least 8 hours.
When ready to serve: In a small bowl, combine raspberries, sugar, and lemon juice. Let stand 5 minutes until berries begin to release their juices.
Spoon overnight oats into serving jars and top with a few spoonfuls of raspberries and lemon curd. Swirl into overnight oats and serve immediately. Enjoy!
Notes
Storing InstructionsStore overnight oats in refrigerator up to 6 days.