Microwave Cinnamon Apple French Toast Mug Cake

Quick Recipe Version (TL;DR)

• Yield: 1 generous mug (1 serving)
• Prep Time: 5 minutes
• Cook Time: 1 minute 30 seconds to 2 minutes 10 seconds (microwave)
• Total Time: 10 minutes (includes resting)

Quick Ingredients

• 1 teaspoon unsalted butter (to grease mug)
• 1 large egg
• 1/4 cup whole milk
• 1 teaspoon granulated sugar
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon vanilla extract
• 1 pinch fine salt
• 1 cup bread cubes (about 1/2-inch cubes; brioche or sandwich bread)
• 1/4 cup peeled diced apple (about 1/4-inch dice)
• 1 tablespoon maple syrup (to finish)
• 1 teaspoon powdered sugar (to finish)

Do This

• 1) Butter a 12–16 oz microwave-safe mug.
• 2) Whisk egg, milk, sugar, cinnamon, vanilla, and salt right in the mug.
• 3) Stir in bread cubes and diced apple until everything is well coated.
• 4) Let stand 2 minutes so the bread soaks up the custard.
• 5) Microwave on HIGH for 60 seconds.
• 6) Microwave 20–70 seconds more (in 10–15 second bursts) until set but custardy.
• 7) Rest 1 minute, then top with maple syrup and powdered sugar.

---

Why You’ll Love This Recipe

• It tastes like classic French toast with warm cinnamon apples, but it’s ready in minutes.
• Everything mixes in one mug, so cleanup is minimal.
• The texture is soft and custardy in the middle with little toasted edges around the rim.
• Perfect for a quick breakfast, late-night snack, or a single-serving sweet craving.

Grocery List

• Produce: 1 small apple (you’ll use about 1/4 cup diced)
• Dairy: 1 large egg, whole milk, unsalted butter
• Pantry: bread (brioche, challah, or sandwich bread), granulated sugar, ground cinnamon, vanilla extract, fine salt, maple syrup, powdered sugar

Full Ingredients

For the French Toast Mug

• 1 teaspoon unsalted butter, softened (for greasing the mug)
• 1 large egg
• 1/4 cup whole milk
• 1 teaspoon granulated sugar
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon vanilla extract
• 1 pinch fine salt
• 1 cup bread cubes (about 1/2-inch cubes; lightly packed)
• 1/4 cup peeled apple, diced small (about 1/4-inch dice)

To Finish

• 1 tablespoon maple syrup
• 1 teaspoon powdered sugar

Step-by-Step Instructions

Step 1: Choose the right mug and grease it

Use a 12–16 oz microwave-safe mug so the French toast has room to puff without overflowing. Rub the inside of the mug with 1 teaspoon butter, coating the bottom and sides well. This helps prevent sticking and adds buttery flavor.

Step 2: Whisk the custard base

Crack 1 large egg into the mug. Add 1/4 cup whole milk, 1 teaspoon sugar, 1/2 teaspoon cinnamon, 1/4 teaspoon vanilla, and a pinch of salt. Whisk with a fork until the mixture is very smooth and no streaks of egg white remain (this helps the mug cook evenly).

Step 3: Add bread and apples

Add 1 cup bread cubes and 1/4 cup diced apple to the mug. Stir gently until every bread cube is coated. Press the bread down lightly so it’s mostly submerged in the custard.

Step 4: Let it soak for better texture

Let the mixture stand for 2 minutes. This short soak makes the inside more custardy and helps prevent dry pockets of bread.

Step 5: Microwave in stages to avoid rubbery eggs

Microwave on HIGH for 60 seconds. The mug will puff and the edges will start to look set.

Continue microwaving on HIGH for 20 to 70 seconds more, in 10–15 second bursts, until the top looks mostly set but still slightly glossy in the center. Total microwave time is typically 1 minute 30 seconds to 2 minutes 10 seconds, depending on your microwave and mug shape.

Doneness cue: The center should spring back lightly when touched with a spoon. If you see obvious liquid egg pooling, microwave another 10–15 seconds.

Step 6: Rest so the custard finishes setting

Let the mug stand on the counter for 1 minute. The residual heat finishes cooking the center gently, keeping the texture soft instead of tough.

Step 7: Finish and serve

Drizzle 1 tablespoon maple syrup over the top and dust with 1 teaspoon powdered sugar. Enjoy straight from the mug, or tip it out into a small bowl if you want more room for toppings.

Pro Tips

• Use slightly stale bread if you can: Bread that’s 1–2 days old soaks up custard without turning to mush.
• Dice the apple small: A 1/4-inch dice cooks tender in the short microwave time.
• Don’t overcook: Microwaves set eggs quickly; stopping when it’s just barely done (then resting) keeps it custardy.
• Adjust for microwave power: A stronger microwave may finish closer to 1 minute 30 seconds; lower power may need up to 2 minutes 10 seconds (or a few extra bursts).
• Want more caramel-apple vibes? Let the mug stand 2 minutes after cooking before eating; the apples soften further and the cinnamon flavor blooms.

Variations

• Caramel pecan apple: Add 1 tablespoon chopped pecans with the bread, and finish with 1 teaspoon caramel sauce instead of (or alongside) maple syrup.
• Cream cheese swirl: Drop in 1 tablespoon cream cheese (small dollops) right before microwaving for tangy pockets.
• Extra-spiced: Add 1/8 teaspoon ground nutmeg or a tiny pinch of ground cloves to the custard.

Storage & Make-Ahead

This recipe is best eaten fresh while warm. If needed, cover and refrigerate leftovers for up to 1 day. Reheat in the microwave on HIGH in 15-second bursts until warmed through (usually 30–45 seconds). For make-ahead, you can cube the bread and dice the apple up to 24 hours in advance; store bread in an airtight container and apple in the fridge in a sealed container.

Nutrition (per serving)

Approximate (1 mug, without additional toppings beyond listed): 390 calories, 14 g protein, 13 g fat, 55 g carbohydrates, 4 g fiber, 22 g sugars, 390 mg sodium.