Greek Yogurt Espresso Muffins

For The Muffins:

• 
  2 cups all-purpose flour* (organic; gluten free and oat will also work)
• 
  2 tsp baking powder*
• 
  ¹⁄₂ tsp salt
• 
  ¹⁄₂ tsp cinnamon*
• 
  1 tsp espresso powder* (1 heaping teaspoon, or a little more if you want a stronger coffee flavor)
• 
  ¹⁄₂ cup monk fruit*
• 
  4 tbsp butter (grass-fed)
• 
  ¹⁄₄ cup almond milk (unsweetened)
• 
  ³⁄₄ cup Greek yogurt (organic, plain nonfat)
• 
  1 tsp vanilla extract*
• 
  140 g dark chocolate* (organic dark chocolate chips or chopped chocolate. I like the brand Hu (1/2 heaping cup apx))

For the Streusel Topping:

• 
  2 tbsp butter (grass fed)
• 
  4 tbsp all-purpose flour* (organic)
• 
  2 tbsp monk fruit*
• 
  2 tbsp brown monk fruit
• 
  ¹⁄₄ tsp salt
• 
  2 tsp espresso powder*
• 
  ¹⁄₂ tsp cinnamon*