A one-to-one ratio usually works best. Just make sure your oats are covered with milk. The oats absorb a lot of the milk!
1 cup rolled oats (can be regular rolled oats or gluten-free), steel-cut oats work too but they need to be soaked a little longer
1-1.5 cup milk (can be cows milk or any dairy-free milk you love)
The add-ins: We don't really measure these and just put in whatever you are feeling. If I had to guess 2-3 tbs.
pumpkin seeds
sunflower seeds
chia seeds - I wouldn't do more than 1tbs of these
hemp hearts - a great source of protein and healthy fats
coconut flakes
flax seeds - ground or whole
about 1-2 tablespoons of a nut butter
dates
apple chunks
sliced strawberries
Blueberries
mango
mashed banana
frozen blueberries
cinnamon
vanilla extract
maple syrup
Directions: Mix your base (oats and milk) and your favorite "add-ins" together. If you have chia seeds in there mix extra well! Cover the container and place it in the fridge overnight. In the morning your oats will be ready to devour. Mix one more time and serve.
My family loves to do ground flax, hemp, chia seeds, and a pinch of salt for the base. We let that sit overnight with 3/4 of vanilla almond milk and 1/4 of whole milk. In the morning we add in PB, fruit like frozen blueberries, coconut flakes, cinnamon, pumpkin seeds, and slivered almonds!