In a large bowl, combine the milk, honey, cocoa powder, and vanilla. Whisk until the cocoa powder dissolves into the milk, leaving no visible clumps.
Add the yogurt and oats to the bowl and mix. I really like using vanilla Greek yogurt. It sweetens and adds flavor at the same time.
Divide the oat mixture into two jars or cover the bowl (or storage container) with a lid.
Refrigerate:
Refrigerate for 4 hours or overnight.
Serve:
In the morning, enjoy cold or warmed up for 30 to 60 seconds in the microwave, topped with your favorite toppings.
Notes
The sweetness of these overnight oats will vary depending on the type of milk you use. Plant milks with vanilla flavor (both sweetened or unsweetened) work great.
Greek yogurt or regular can be used, with Greek yogurt providing more protein and a creamier texture.
You can omit the yogurt by adding ½ cup of additional milk.
Toppings & Add-Ins:
Nuts or seeds: opt for unsalted raw chopped nuts & seeds.
Fruit: both fresh and frozen fruit work. Can be added to the oats or on top. Bigger fruits should be sliced.
Banana: 1 small mashed banana can be added to the liquid mixture.
Nut butters: peanut butter, almond butter, and seed butters are great for topping or adding into the mixture or as a topping. You can also add 1-2 tablespoons of PB powder.