Chocolate Flaxseed Cake (in a mug!)

Who doesn’t love a chocolatey sweet treat? We’re big fans of single-serve desserts, especially when it comes together in less than five minutes!

This chocolate flaxseed cake is the perfect way to celebrate Valentine’s Day without having to labor over a full-size version – no special equipment or pans required.

This chocolate mug cake is also vegan, which makes it totally acceptable to serve slightly under-baked. 

a note on ingredients

We prepared this recipe using whole wheat pastry flour but you can also use a traditional white whole wheat flour. The two are interchangeable but pastry flour will leave your baked goods with a lighter, softer texture.

Because our Flax Milk contains real flaxseed (rather than just oil) and is richer and creamier than other plant based milks, baking with it often requires just a dash more milk. If you choose to use another plant based milk, we suggest using 2 Tbsp.

The milled flaxseed in this recipe serves as the healthy binding agent!

serving suggestions

We suggest serving this with vegan whipped cream or a glass of Vanilla Flax Milk!

Photo of Chocolate Flaxseed Cake in a mug with a bag of Manitoba Milling Smooth Whole Milled Flaxseed

Chocolate Flaxseed Cake



  • 3 Tbsp whole-wheat pastry flour
  • 1 Tbsp unsweetened cocoa powder
  • ¼ tsp baking powder
  • 2 Tbsp cane sugar
  • Pinch of fine salt
  • 2.5 Tbsp Manitoba Milling Co. Unsweetened Flax Milk
  • 1 Tbsp Manitoba Milling Co. Smooth Whole-Milled Flax
  • 2 tsp neutral oil such as canola or grapeseed
  • ¼ tsp vanilla extract
  • Optional: ¼ tsp instant espresso powder



  • Add flour, cocoa powder, baking powder, sugar, and salt to a microwave safe mug. Mix.
  • In a separate dish, combine milk and flaxseed to create a “flax egg”. Let sit for ~2 minutes.
  • Add flax egg, oil, and vanilla extract to the dry ingredients and stir until just combined.
  • Microwave on high for 60-75 seconds, or until slightly puffed up and top springs back when lightly touched.
  • Serve immediately with fresh berries, powdered sugar, and/or a dollop of your favorite plant-based ice cream or whipped cream.


For a cleaner presentation you can mix the ingredients in a separate bowl and then transfer to a mug for presentation.
Note that microwave cook times may vary.