Quick Recipe Version (TL;DR)
Quick Ingredients
- 1 cup (150 g) sliced peaches (fresh or thawed frozen), or 1 cup canned peach slices, well-drained
- 2 teaspoons (8 g) granulated sugar
- 1 teaspoon cornstarch
- 1/2 teaspoon ground cinnamon
- Pinch fine salt
- 1 teaspoon lemon juice (optional but nice)
- 3 tablespoons (24 g) all-purpose flour
- 1 tablespoon (12 g) granulated sugar (for topping)
- 1/4 teaspoon baking powder
- 3 tablespoons (45 ml) milk
- 1 tablespoon (14 g) unsalted butter, melted
- 1/4 teaspoon vanilla extract (optional)
Do This
- 1. Use a microwave-safe 12 to 14 oz mug; set it on a plate.
- 2. Stir peaches + 2 tsp sugar + cornstarch + cinnamon + salt (+ lemon) in the mug.
- 3. Microwave 1 minute 30 seconds on HIGH (1000W) until bubbly; stir.
- 4. In a small bowl, mix flour + 1 tbsp sugar + baking powder; stir in milk + melted butter (+ vanilla) to make a thick batter.
- 5. Spoon batter over peaches (do not stir into fruit); spread gently to the edges.
- 6. Microwave 1 minute 10 seconds to 1 minute 40 seconds on HIGH until topping looks set and fruit is bubbling at the edges.
- 7. Rest 2 minutes, then eat warm (great with vanilla ice cream or yogurt).
Why You’ll Love This Recipe
- All the cozy, familiar flavor of peach cobbler with cinnamon, but made in one mug.
- Fast: a syrupy fruit base and a soft, cake-biscuit topping in just a few microwave minutes.
- Flexible with fresh, frozen, or canned peaches.
- No special equipment, no oven, and minimal dishes.
Grocery List
- Produce: Peaches (fresh) or lemon (optional)
- Dairy: Milk, unsalted butter
- Pantry: Granulated sugar, all-purpose flour, cornstarch, baking powder, ground cinnamon, fine salt, vanilla extract (optional)
Full Ingredients
Peach Filling
- Peaches: 1 cup (150 g) sliced peaches (fresh or thawed frozen), or 1 cup canned peach slices, well-drained
- Granulated sugar: 2 teaspoons (8 g)
- Cornstarch: 1 teaspoon (3 g) (thickens the syrup)
- Ground cinnamon: 1/2 teaspoon
- Fine salt: Pinch (about 1/16 teaspoon)
- Lemon juice (optional): 1 teaspoon (adds brightness and balances sweetness)
Quick Cobbler Topping (Cake-Biscuit Style)
- All-purpose flour: 3 tablespoons (24 g)
- Granulated sugar: 1 tablespoon (12 g)
- Baking powder: 1/4 teaspoon
- Fine salt: Pinch (about 1/16 teaspoon)
- Milk: 3 tablespoons (45 ml)
- Unsalted butter, melted: 1 tablespoon (14 g)
- Vanilla extract (optional): 1/4 teaspoon
Optional for Serving
- 1 small scoop (about 1/4 cup) vanilla ice cream
- 1 to 2 tablespoons whipped cream
- 1 tablespoon toasted chopped pecans or walnuts
Step-by-Step Instructions
Step 1: Choose the right mug and set up safely
Grab a microwave-safe mug that holds 12 to 14 ounces so the cobbler has room to bubble without overflowing. Place the mug on a microwave-safe plate to catch any drips. This dessert boils up around the edges, so the plate is worth it.
Step 2: Mix the peaches with cinnamon sugar and thickener
Add the 1 cup sliced peaches to the mug. Sprinkle in 2 teaspoons sugar, 1 teaspoon cornstarch, 1/2 teaspoon cinnamon, and a pinch of salt. Add 1 teaspoon lemon juice if using. Stir well so the cornstarch dissolves and coats the fruit (no dry white patches).
Step 3: Microwave the fruit until syrupy and bubbling
Microwave on HIGH for 1 minute 30 seconds (timed for a 1000W microwave). The peaches should look glossy and hot, with bubbling syrup forming at the bottom. Carefully remove and stir.
If your peaches are still firm and not bubbling, microwave 15 seconds more and stir again. (Different microwaves vary; the goal is bubbling fruit so the cornstarch can thicken properly.)
Step 4: Stir together the quick cobbler batter
In a small bowl (or a second mug), mix 3 tablespoons flour, 1 tablespoon sugar, 1/4 teaspoon baking powder, and a pinch of salt.
Add 3 tablespoons milk, 1 tablespoon melted butter, and 1/4 teaspoon vanilla (if using). Stir until you have a thick, spoonable batter with no big flour pockets. It should look like a quick pancake batter, but thicker.
Step 5: Top the peaches (do not mix) for a true cobbler vibe
Spoon the batter evenly over the hot peaches. Use the back of the spoon to gently spread it toward the edges. Do not stir it into the fruit; keeping distinct layers helps you get a jammy base with a soft, cake-biscuit top.
Step 6: Microwave until the topping is set
Microwave on HIGH for 1 minute 10 seconds. Check for doneness: the topping should look mostly set (no wet batter puddles), and the peach syrup should be bubbling up around the edges.
If the center still looks wet, microwave in 10-second bursts until set, up to about 1 minute 40 seconds total. Avoid overcooking, which can make the topping tough.
Step 7: Rest, then serve warm
Let the mug cobbler stand for 2 minutes. This rest is important: the filling thickens as it cools slightly, and the topping finishes setting.
Eat straight from the mug, or top with vanilla ice cream so it melts into the cinnamon-peach syrup.
Pro Tips
- Use enough mug capacity: A 12 to 14 oz mug helps prevent overflow when the fruit boils.
- Cornstarch needs a boil: Make sure the peach mixture bubbles in Step 3, or the syrup may stay thin and gritty.
- Don’t overcook the topping: Microwaves can turn small baked goods rubbery fast. Stop as soon as the top looks set; carryover heat finishes it.
- Frozen peaches work great: Thaw first or add an extra 15 to 30 seconds in Step 3 so the fruit gets hot and syrupy before topping.
- For extra “oven-baked” flavor: Add a tiny pinch (about 1/16 teaspoon) of cinnamon to the batter, or sprinkle 1/4 teaspoon sugar on top before the final microwave.
Variations
- Brown sugar peach cobbler: Swap the sugar in the peach filling for 2 teaspoons packed light brown sugar for a deeper caramel note.
- Oat crumble topping: Replace the batter with a crumble: mix 2 tablespoons oats, 1 tablespoon flour, 1 tablespoon brown sugar, 1/8 teaspoon cinnamon, and 1 tablespoon melted butter; sprinkle on top and microwave until bubbling and fragrant, 1 minute 10 seconds to 1 minute 40 seconds.
- Peach-berry cobbler: Replace 1/4 cup of the peaches with 1/4 cup blueberries or raspberries; keep the rest the same.
Storage & Make-Ahead
This mug cobbler is best eaten fresh and warm. If you do have leftovers, cover and refrigerate for up to 24 hours. Reheat in the microwave for 20 to 30 seconds, then rest for 1 minute. For make-ahead, you can pre-mix the dry topping ingredients (flour, sugar, baking powder, salt) and store airtight at room temperature for up to 1 week; add milk and melted butter right before cooking.
Nutrition (per serving)
Approximate, for 1 mug cobbler (without ice cream): 320 calories, 8 g fat, 60 g carbohydrates, 3 g fiber, 36 g sugars, 5 g protein, 220 mg sodium.
