Dessert

Coffee Mug Cake with Streusel Recipe

Bylina Carter November 2, 2025November 2, 2025

Introduction

This Coffee Mug Cake is a quick and satisfying treat perfect for when you want a cozy dessert without the wait. Made with simple ingredients and topped with a cinnamon streusel, it can be ready in minutes using either the microwave or oven.

A close-up of a half-eaten muffin with a crumbly, moist texture showing many tiny air pockets. The muffin is topped with a thin layer of white glaze that drips down its sides, giving a shiny contrast to its warm brown color with darker specks inside. It sits on a white plate with a slight rim, placed on a white marbled surface. In the background, blurred, are two glasses filled with white and dark drinks. photo taken with an iphone --ar 4:5 --v 7

Ingredients

3 tbsp spelt flour (white, oat, or almond flour can be used)
1/4 tsp baking powder

1/16 tsp salt
Pinch uncut stevia OR 1 tbsp sugar

1 tbsp + 2 tsp water
2 tsp oil or buttery spread (or applesauce for a low-fat option)

1/4 tsp pure vanilla extract
1/8 tsp cinnamon
1 1/4 tsp sucanat or brown sugar (or keto sweetener)

1/4 to 1/2 tsp oil or butter (or applesauce for low-fat)
Tiny pinch salt
2 pecan or walnut halves

Instructions

Step 1: Preheat your oven to 330°F if using the oven. If using a microwave, no preheating is needed. Grease a muffin tin, ramekin, or microwave-safe mug.
Step 2: In a bowl, combine the dry batter ingredients: spelt flour, baking powder, salt, and sweetener. Mix well.
Step 3: Add the water, oil or buttery spread, and vanilla extract to the dry mixture. Stir until just combined without overmixing.

Step 4: In a small bowl, mix the streusel ingredients: cinnamon, sucanat or brown sugar, oil or butter, salt, and nuts.
Step 5: Spoon half of the batter into your prepared tin or mug. Sprinkle about two-thirds of the streusel on top.
Step 6: Add the remaining batter over the streusel layer, then finish by sprinkling the rest of the streusel on top.

Step 7: Bake for 12–13 minutes in the oven, or microwave for about 1 minute. Microwave times may vary depending on wattage, so check for doneness by inserting a toothpick— it should come out clean.

Tips & Variations

For a fattier, richer cake, use oil or buttery spread instead of applesauce.
If you love extra streusel, feel free to double the streusel ingredients for a crunchier topping.

Try swapping pecans or walnuts for your favorite nuts or even chocolate chips for added texture.

Storage

Store any leftover mug cake in an airtight container at room temperature for up to 1 day, or refrigerate for up to 2 days. Reheat gently in the microwave for 20–30 seconds before enjoying.

How to Serve

A single cinnamon muffin sits on a small white plate, showing a rough, crumbly top layer with bits of cinnamon strewn throughout; the muffin is drizzled with a thin white glaze that flows down the sides in small streams. The plate rests on a bright pink floral napkin placed on a white marbled surface. A silver fork lies on the left side of the plate, its shiny texture catching the light. The background softly blurs out glass jars or cups, adding depth to the image. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use regular all-purpose flour instead of spelt?

Yes, all-purpose flour can be used as a substitute; however, the texture may be slightly different. Spelt adds a nuttier flavor and a lighter texture.