01 - Preheat oven to 375°F. Line a 12-cup muffin tin with paper liners or grease lightly with cooking spray.
02 - In a large mixing bowl, whisk together flour, cocoa powder, sugar, baking powder, baking soda, and salt until well blended.
03 - In a separate medium bowl, whisk eggs, milk, vegetable oil, and vanilla extract until smooth and fully incorporated.
04 - Pour the wet ingredients into the dry ingredients. Mix gently with a spatula until just combined, being careful not to overmix—the batter should remain slightly lumpy.
05 - Gently fold in the diced strawberries and semi-sweet chocolate chips until evenly distributed throughout the batter.
06 - Divide the batter evenly among the prepared muffin cups, filling each about 3/4 full.
07 - Sprinkle mini chocolate chips over the top of each muffin for added texture and visual appeal.
08 - Bake for 18-22 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
09 - Allow muffins to cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.