Prep Time 20 minutes mins
Cook Time 15 minutes mins
Total Time 35 minutes mins
Keep streusel cold for crunch. Don't overmix the batter – lumpy is good. For frozen berries, do not thaw and add 2–3 minutes to bake time. Store unglazed muffins at room temp for up to 3 days, or freeze for up to 2 months. Reheat in oven or air fryer at 325°F for 5 minutes to restore crunch.