1-First Step: Preheat and Prepare Begin by preheating your oven to 400 degrees Fahrenheit and lining a muffin pan with cupcake liners. This step ensures even baking and makes removal simple, taking about 5 minutes. If you’re adapting for dietary needs, like using gluten-free flour, measure it now to avoid last-minute rushes.

2-Second Step: Mix the Dry Ingredients In a large bowl, combine 2 cups all-purpose flour, 1 cup sugar, 2 teaspoons baking powder, and 1/2 teaspoon salt. Stir them together until evenly mixed, which takes just a minute or two. This is a great spot for gluten-free substitutions if needed, keeping the batter light and airy for those preferences.

3-Third Step: Prepare the Wet Ingredients In another bowl, whisk 2 large eggs until smooth, then add 1/2 cup melted butter, 1/2 cup milk, and 1 teaspoon vanilla extract. Whisk everything until it’s well combined, about 30 seconds. For vegan options, swap in flax eggs here to maintain that moisture without altering the fluffy outcome.

4-Fourth Step: Combine and Fold in Blueberries Add the wet mixture to the dry ingredients and stir gently until just combined the batter will be lumpy, and that’s okay. For variations, fold in the 2 cups of washed blueberries now, ensuring they’re distributed evenly. Overmixing can make muffins tough, so stop once everything is incorporated.

5-Fifth Step: Make the Streusel Topping In a separate bowl, mix 1/4 cup flour, 2 tablespoons packed brown sugar, 2 tablespoons granulated sugar, 1/4 teaspoon cinnamon, and 1/8 teaspoon salt. Use a pastry cutter to add 2 tablespoons cold butter until the mixture is crumbly. This takes about 2 minutes and adds that irresistible crunch perfect for busy professionals wanting a quick upgrade.

6-Sixth Step: Fill and Bake Spoon the batter into the muffin cups, filling each about 2/3 full, and top with about 1 tablespoon of streusel. Bake for 18 to 22 minutes, or until a toothpick inserted in the center comes out clean with a few crumbs. For different pan sizes, adjust time as needed, like 10-15 minutes for mini muffins.

7-Final Step: Cool and Serve Let the muffins cool on a rack for a few minutes before removing them from the pan. They’re best enjoyed warm, and this recipe yields 12 regular-sized muffins. Store them as outlined later, and feel free to add lemon zest for extra flavor if you’re experimenting for dietary tweaks.