Preheat and prep: Heat your oven to 375°F (190°C). Line a standard 12-cup muffin pan with paper liners or lightly coat with cooking spray.
Mix dry ingredients: In a large bowl, whisk the all-purpose flour, almond flour, sugar, baking powder, baking soda, and salt until well combined.
Whisk wet ingredients: In a separate bowl or large measuring cup, whisk the almond milk, Greek yogurt, egg white, olive oil, vanilla, and almond extract until smooth.
Combine gently: Pour the wet mixture into the dry.
Stir with a spatula until just combined. The batter should be thick and a bit lumpy—avoid overmixing to keep the muffins tender.
Fold in berries: Add the raspberries and fold gently 3–4 times, just until distributed. If using frozen berries, add them straight from the freezer to limit bleeding.
Portion: Divide the batter evenly into the 12 muffin cups.
The cups will be about two-thirds full. Sprinkle sliced almonds on top if using.
Bake: Bake for 13–16 minutes, or until the tops are set and a toothpick comes out with a few moist crumbs. Avoid overbaking so they stay soft.
Cool: Let muffins rest in the pan for 5 minutes, then transfer to a rack to cool completely.
They’ll continue to set as they cool.
Taste and adjust: After your first batch, decide if you want a bit more sweetness next time. You can add a teaspoon or two of zero-calorie sweetener without pushing past 100 calories.