Preheat your oven to 350°F and line a standard muffin tin with six parchment paper liners.
In a large bowl, whisk together the oat flour, almond flour, vanilla protein powder, Truvia sweetener, baking powder, and sea salt.
In a separate medium bowl, beat the eggs then stir in the pumpkin puree, milk, melted coconut oil, vanilla paste, and vanilla extract until smooth.
Pour the wet ingredients into the dry ingredients and stir gently with a spatula until just combined, being careful not to overmix the batter.
Distribute the batter evenly among the six muffin liners, filling each nearly to the top to ensure a high rise.
Bake for 18 to 22 minutes or until the tops are golden and a toothpick inserted into the center comes out clean.
Allow the muffins to cool in the pan for 5 minutes before transferring to a wire rack to cool completely before serving.