Step 1

Preheat the oven to 375°F and line a muffin tin with 12 parchment paper liners (or greased paper liners).

Step 2

In a medium bowl, mix the dry ingredients, including the flour, sugar, baking soda and salt together; set aside.

Step 3

In another large bowl, mix the wet ingredients, including the milk, yogurt, oil and egg.

Step 4

Fold the wet ingredients into the dry ingredients, and use a silicone spatula to mix until just combined. Don’t over mix. Divide the batter into the two bowls to add in the mix-in's.

Step 5

Gently fold in the creamy peanut butter and strawberry jam for sweet muffins, or the grated zucchini and cheddar cheese for savory muffins. Divide the batter evenly between the muffin cups.

Step 6

Bake the muffins in the preheated oven for 20 minutes, or until the muffins are golden brown and a toothpick inserted into the center of a muffin comes out clean. Allow to cool for 5 minutes before removing from the muffin liners.