In a small saucepan, combine rolled oats, water or milk, and a pinch of salt.
Place the saucepan over medium heat and bring the mixture to a gentle simmer, stirring occasionally.
Reduce the heat to medium-low and cook for 5–7 minutes, stirring frequently, until the oats are tender and creamy.
Remove the saucepan from heat once the oats reach your desired consistency.
Let the oatmeal cool slightly for 1–2 minutes. This prevents the Greek yogurt from separating when added.
Stir in Greek yogurt until fully incorporated and creamy.
Add honey or maple syrup and vanilla extract if using, then stir gently.
Transfer the oatmeal to a serving bowl.
Add desired toppings such as fruit, nut butter, granola, or seeds.
Serve immediately while warm, or let cool slightly for a thicker texture.
