Double Blueberry Oatmeal Muffins

Preheat the oven to 400 degrees and line or grease a muffin tin. Make the crumble by combining all ingredients in a small bowl with your hands. Set aside. In a small bowl, combine the oats and water and let it sit for 5-10 minutes. In a mixing bowl, whisk together the butter or oil, sugar, vanilla and egg until completely combined. Stir in the oats. In another bowl, combine the flour, baking powder, baking soda, and salt. Stir the dry mixture into the wet mixture until just combined, then fold in blueberries. Add 2-3 tablespoons of batter to each muffin tin, keeping in mind they will rise a bit. Top with the crumble and bake for 20-24 minutes or until the muffins start to turn golden brown and the center is cooked through.