• Step 1: Preheat your oven to 375°F (190°C). Grease an 8×8-inch baking dish or individual ramekins with non-stick cooking spray or butter.
• Step 2: In a large mixing bowl, combine the old-fashioned oats, 1/2 cup of sliced almonds, brown sugar, baking powder, cinnamon, and salt. Stir to mix well.
• Step 3: In a separate bowl, whisk together the almond milk, egg, melted butter, and vanilla extract until fully combined.
• Step 4: Pour the almond milk mixture into the oat mixture and stir until well incorporated.
• Step 5: Transfer the oat mixture to the prepared baking dish or ramekins. Sprinkle the top with additional sliced almonds.
• Step 6: Bake for 25-30 minutes, or until the oats are set and the top is golden brown. Let cool for 5 minutes before serving.