Line a muffin pan. Preheat the oven to 365 degrees F(185 C). Blend the wet ingredients in a blender with 1/2 cup non dairy milk. Add to a bowl. Use 2 tbsp more dairy milk to rinse out the blender and add to the bowl. (or add all the wet ingredients to a bowl, mix with a spoon until smooth and well combined)
Add 1 cup flour, salt, baking powder to a bowl, mix well. (You can add spices/flavors at this point like cinnamon, nutmeg or some lemon zest). Add to the wet.
In the same dry bowl, add 1/2 cup flour, blueberries and pineapple and toss to coat. Add to the wet bowl and mix in. The batter should be thick and stiff. If it is too stiff, add a tbsp of non dairy milk and mix in.
Drop the thick batter onto lined muffin pan. Bake at 365 degrees F for 22 to 25 mins. (To bake a loaf, bake for 40 to 50 mins)
Cool completely and frost or glaze. I use this cashew vanilla frosting. A simple vanilla or lemon icing will work well too. Store on the counter for a few hours and refrigerate for upto 3 days. This muffin also does well with a cinnamon streusel topping. The muffin tastes more cheesecakey after sitting for a day.
Notes
Gluten-free: Use a mix of 2/3 cup while rice flour, 3/4 cup almond flour, 1/4 cup potato starch. Use 1.5 cups of the mix. Add more if needed for a stiff batter. Nutrition is for 1 muffin