Grab a microwave-safe mug (12 oz or larger) to prevent overflow.
In the mug, combine the melted butter, oil, white sugar, brown sugar, vanilla extract, and milk. Stir until well blended.
1 tbsp. Butter, 1 tsp. Canola Oil, 1 tbsp. White Granulated Sugar, 1 tbsp. Brown Sugar, 1/4 tsp. Vanilla Extract, 3 tbsp. Milk
Add the flour, baking powder, salt, and cinnamon to the wet mixture. Mix until just combined.
3 tbsp. Flour, 1/2 tsp. Baking Powder, pinch Salt, 1/4 tsp. Cinnamon
Fold in the grated carrots, ensuring they’re evenly distributed throughout the batter.
1/4 cup Finely Shredded Carrots
Place the mug in the microwave and cook on high for 1 to 1.5 minutes. Start with 1 minute and check for doneness; the cake should be set and spring back when touched. Be careful not to overcook!