Use equal parts vanilla and almond extract (typically 1 teaspoon each) to create that signature birthday cake taste—the almond extract adds depth and prevents the vanilla from becoming one-dimensional.

Lightly toast the dry oats in a skillet for 2-3 minutes before mixing to enhance their nutty flavor and prevent a gummy texture in the overnight preparation.

Warm your cashew or almond butter slightly before mixing so it blends smoothly throughout the oats instead of clumping, creating a uniform creamy texture.

Add rainbow sprinkles only minutes before consuming to keep them vibrant and crunchy rather than absorbing liquid and becoming soft or losing their color.

Use slightly less milk (½ cup) if refrigerating for 12+ hours, as oats continue absorbing liquid; add more milk if preparing only 4-6 hours ahead to maintain creamy consistency.