Overnight oats are one of the most equipment-minimal breakfast recipes you can make:
The Container Large-Mouth Pint Mason Jar
The recipe specifically calls for a large-mouth, 1-pint mason jar, and this specification is practical rather than aesthetic:
Why pint-sized (16 oz)- The oats expand as they absorb liquid overnight. ½ cup dry oats become significantly larger after absorbing ¾ cup milk plus the yogurt. A pint jar gives adequate space for the expanded oats plus the mango layer on top without overflow risk. A smaller jar produces overflow or forces you to pack everything in too tightly.
Why large-mouth- Standard narrow-mouth jars make it essentially impossible to stir effectively without making a mess. Large-mouth jars give you room to stir, add toppings cleanly, and eat directly from the jar with a normal spoon. Wide Ball or Kerr mason jars are the most widely available and work perfectly.
Alternatives: Any airtight container that holds at least 16 ounces works food storage containers with snap lids, wide cereal bowls covered with plastic wrap, or any jar with a lid. The mason jar is just specifically convenient and looks great on social media, which is genuinely a quality of life consideration for breakfast.
Supporting Equipment For
Measuring cups and spoons - for the oats, milk, yogurt, maple syrup, chia seeds, and vanilla
Spoon or small spatula - for stirring the base ingredients together before adding mango
Knife and cutting board - for dicing fresh mango if using fresh rather than frozen
That's genuinely the complete equipment list. One jar, measuring tools, a spoon. The simplicity is one of overnight oats' defining virtues any kitchen can make this recipe regardless of how well-equipped it is.