Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This step is crucial for ensuring your muffins bake evenly and rise beautifully.
Step 2: Prepare Muffin Tin
Grease your muffin tin with butter or non-stick spray, or line it with mini muffin liners for easy removal.
Step 3: Mix Dry Ingredients
In a large mixing bowl, whisk together the all-purpose flour, baking soda, salt, and 1/2 cup of granulated white sugar. This will help to evenly distribute the leavening agent throughout the flour.
Step 4: Cream Butter and Sugar
In another bowl, cream the room temperature salted butter with the remaining 1 cup of granulated white sugar. Use a hand mixer or stand mixer to beat them together until the mixture is light and fluffy, which should take about 2-3 minutes.
Step 5: Incorporate Orange Juice and Zest
Add the orange juice and 1 teaspoon of orange zest to the creamed butter and sugar mixture. Mix until well combined.
Step 6: Add Sour Cream
Next, fold in the sour cream gently until the mixture is smooth. This will contribute to the muffins’ moist texture.
Step 7: Combine Wet and Dry Ingredients
Gradually add the dry ingredients to the wet mixture, folding gently with a rubber spatula until just combined. Be careful not to overmix; a few lumps are perfectly fine.
Step 8: Optional Add-Ins
If you’re using raisins or chopped walnuts, fold them into the batter now. These optional ingredients add an extra layer of flavor and texture to your muffins.
Step 9: Fill Muffin Tin
Spoon the batter into the prepared muffin tin, filling each cup about 2/3 full. This allows enough room for the muffins to rise without overflowing.
Step 10: Bake
Place the muffin tin in the preheated oven and bake for about 15-18 minutes, or until a toothpick inserted in the center comes out clean. Keep an eye on them towards the end to prevent overbaking.
Step 11: Cool
Once baked, remove the muffins from the oven and let them cool in the tin for about 5 minutes. Then, transfer them to a cooling rack to cool completely.