Banana Crumble Muffins

For the muffins:

Preheat oven to 350 F. Line a 12-count standard muffin tin with paper liners.

In a large bowl, combine the flour, sugar, baking powder, baking soda and salt.

In a separate bowl, mix together the egg, oil, yogurt and vanilla. Stir the wet ingredients into the dry ingredients. Fold in the mashed bananas and chocolate chips.

Fill the muffin liners with the batter putting an even amount into each.

For the crumble:

Combine all of the topping ingredients in a medium sized bowl. Mix with a fork, a pastry cutter, your fingers, or a food processor. Use whichever works best for you. Once it is a crumbly consistency, sprinkle over muffin batter.

Put the muffins in the oven at 350 F for 22 minutes. They are done when a toothpick poked in the centre comes out clean.

Makes approximately 12 muffins.