- Preheat the oven to 325 degrees. In a bowl, use a fork and mix together the butter, flour, brown sugar, oats, cinnamon, vanilla, and salt until the mixture is crumbly.
- Split the muffins and spread peanut butter, followed by jelly. Sprinkle the streusel topping evenly over the muffins. Bake for 10 minutes. Then place oven on broil for 2 minutes, just until top has turned golden brow