Preheat the oven to 350ºF. Line 12 cups of a standard muffin pan with paper liners.

In a large bowl, whisk together the brown rice flour, almond flour, ground chia seeds, baking soda, cinnamon, and salt. In a small pot over medium heat, whisk together the almond milk, applesauce, peanut butter, and maple syrup until the peanut butter is melted and the mixture is warm. Pour the liquid ingredients into the dry ingredients and stir to combine thoroughly. Divide the batter among the lined muffin cups.

In a small bowl, combine all of the ingredients for the streusel with your fingers. Sprinkle the streusel over the top of the muffins. Bake for about 20 minutes until golden brown and a toothpick inserted into a muffin comes out clean. Cool completely. Store in an airtight container.