Ingredients:

  • 1 cup (100g) rolled oats
  • 1 ½ cups (360ml) milk (dairy or non-dairy)
  • ½ cup (100g) granulated sugar
  • ⅓ cup (80ml) vegetable oil
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup (120g) all-purpose flour
  • 1 teaspoon baking powder
  • ½ teaspoon baking soda
  • ½ teaspoon cinnamon
  • ¼ teaspoon salt
  • ½ cup (60g) all-purpose flour (for streusel)
  • ½ cup (50g) brown sugar, packed
  • ½ teaspoon cinnamon (for streusel)
  • ¼ cup (60g) unsalted butter, cold and cut into small cubes
  • Pinch of salt (for streusel)

Instructions:

  1. Preheat the oven to 350°F (175°C).
  2. In a bowl, combine rolled oats and milk; let sit for 10 minutes.
  3. In a separate bowl, whisk together sugar, oil, eggs, and vanilla.
  4. Add softened oats mixture, mixing until well combined.
  5. In another bowl, sift together flour, baking powder, baking soda, cinnamon, and salt.
  6. Gradually fold dry ingredients into wet ingredients until just combined.
  7. In a mixing bowl, combine flour, brown sugar, cinnamon, and salt for the streusel.
  8. Add cold butter cubes; using a fork, work butter into the dry mixture until crumbly.
  9. Pour the cake batter into the greased baking pan.
  10. Evenly sprinkle the streusel topping over the cake batter.
  11. Place in the preheated oven and bake for 35-45 minutes or until a toothpick inserted in the center comes out clean.
  12. Allow to cool in the pan for 10-15 minutes before slicing. Serve warm or at room temperature.