Preheat your oven to 375°F (190°C) and prepare your muffin tin by greasing it or lining it with paper liners.
In a large bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt.
In another bowl, mix together the milk, vegetable oil, egg, and vanilla extract until well combined.
Pour the wet mixture into the dry ingredients and stir gently until just combined. Fold in the cherries.
In a small bowl, mix together the flour, brown sugar, and ground cinnamon. Add in the cold diced butter and blend until crumbly.
Spoon the muffin batter into each prepared muffin cup until they are about two-thirds full. Sprinkle the cobbler topping over each muffin.
Place your muffin tin in the preheated oven and bake for about 20–25 minutes until a toothpick comes out clean.
Let your muffins cool in the pan for about five minutes before transferring them to a wire rack to cool completely.
