Toast the almonds (optional but worth it): In a dry skillet over medium heat, toast sliced almonds for 3–4 minutes, stirring often, until golden and fragrant. Set aside.
Combine oats and liquid: In a small pot, add 1/2 cup rolled oats and 3/4–1 cup almond milk.
Stir in a pinch of salt and a dash of cinnamon.
Cook the oats: Bring to a gentle simmer over medium-low heat. Cook 4–6 minutes, stirring occasionally, until thick and creamy. For microwave, cook in a large bowl for 2–3 minutes, stopping to stir halfway.
Add blueberries: Stir in 1/2–3/4 cup blueberries during the last 1–2 minutes.
Fresh will warm through; frozen will burst and color the oats.
Stir in protein: Remove from heat. Whisk 1 scoop protein powder with a splash of almond milk to make a smooth slurry, then stir into the oats. This prevents clumping and dryness.
Flavor boosts: Add 1/2 teaspoon vanilla extract and a little lemon zest if using.
Taste and adjust cinnamon and salt.
Sweeten to taste: Drizzle in maple syrup or honey if you like, starting with 1–2 teaspoons.
Finish and serve: Top with toasted almonds and a small spoonful of almond butter. Add extra blueberries on top for a fresh pop.