Rustic Plum & Walnut Tart

Rustic Plum & Walnut Tart - A beautiful dessert that combines a simple homemade walnut butter with fresh, juicy plums! |

The sad irony of the summer is it’s when the best fruit for baking pies is in season, but it’s the worst time of year to turn on the oven! It’s been a little bit cooler here in Detroit lately, after nearly two weeks of punishing humidity. But it’s still warm enough that turning on the oven for an hour to bake a pie doesn’t sound like the most appealing idea.

Rustic Plum & Walnut Tart - A beautiful dessert that combines a simple homemade walnut butter with fresh, juicy plums! |

The answer to this conundrum is my Sharp R-830 Convection Microwave Oven. This is a microwave that has convection technology, which means you can use it for nearly anything you would use a traditional oven for. It gets the job done fast, and without heating up your kitchen!  Pretty cool, right?

Rustic Plum & Walnut Tart - A beautiful dessert that combines a simple homemade walnut butter with fresh, juicy plums! |

Back to that summer fruit. The plums this year are amazing! So juicy and so sweet. Perfect for eating on their own, but I’m partial to baking them into a tart. I started with store-bought pie crust. It’s quick, I’m cool with it, don’t hassle me about it. But no seriously, you could totally use homemade crust here if that’s your thing. Start by rolling the crust out onto a piece of parchment paper.

Make a quick homemade walnut butter with walnuts toasted in the convection microwave. Spread the walnut butter over the crust, then top with a whole pile of quartered plums. Bake for about an hour using the convection setting, or until the plums are tender and the crust is golden brown. Ice cream is entirely optional, but entirely encouraged. Because if you don’t like warm fruit tart + ice cream, I’m not so sure about you.

UPDATE 10/17/16: Sharp Home has recently stopped production of the R-830 model of their Convection Microwave Oven and has come out with a new model, the R-930CS Sharp Carousel Countertop Convection + Microwave Oven.

Rustic Plum & Walnut Tart - A beautiful dessert that combines a simple homemade walnut butter with fresh, juicy plums! |

Rustic Plum & Walnut Tart

Yield: 8 servings

Prep Time: 25 minutes

Cook Time: 1 hour


For the Walnut Butter:

  • 3/4 cup walnuts
  • 1 egg
  • 3 tablespoons light brown sugar
  • 1 tablespoon unsalted butter
  • 1/2 teaspoon cinnamon
  • 1/2 teaspoon vanilla extract
  • Pinch of sea salt

For the Tart & Assembly:

  • 2 pounds plums, pitted and quartered
  • Zest of 1 small lemon
  • 2 tablespoons light brown sugar
  • 1 tablespoon all-purpose flour
  • Pinch of sea salt
  • 1 refrigerated pie crust (or homemade crust for a single-crust pie)
  • 1 tablespoon cold unsalted butter, cut into small pieces
  • 1 egg, beaten
  • Coarse sugar, for crust (optional)


  1. Make the Walnut Butter: Preheat Sharp R-830 Convection Microwave Oven to 350 degrees F. Line turntable with foil; place walnuts on foil. Bake 6 minutes or until walnuts are fragrant and lightly toasted. Carefully remove foil with walnuts from microwave; transfer walnuts to food processor and discard foil. Add egg, brown sugar, butter, cinnamon, vanilla and salt to food processor; process until smooth.
  2. Make the Tart: Preheat Sharp R-830 Convection Microwave Oven to 375 degrees F. In large bowl, toss quartered plums, lemon zest, brown sugar, flour and salt until very well combined (make sure all flour is moistened).
  3. Unroll pie crust on parchment paper. Evenly spread crust with walnut butter, leaving a 1-inch border around edges of crust. Spoon plum mixture over walnut butter. Fold edges of crust in toward plum mixture. Dot butter pieces over plums. Brush edges of crust with beaten egg and sprinkle with coarse sugar, if desired.
  4. With potholders, carefully remove turntable from oven and slide tart on parchment paper onto turntable. Return turntable to oven and bake tart 55 to 60 minutes or until plums are tender and crust is golden brown. Let stand 20 minutes before slicing and serving.

Making one of my recipes? Please let me know by sharing a photo on my Facebook page, or uploading to Instagram or Twitter with the tag #foxeslovelemons. It would make my day!

Disclosure: This was a sponsored post written by me on behalf of Sharp Electronics Corporation. Sponsored posts help me pay for the costs associated with this blog (groceries…lots of groceries), and help support me as I pursue a career in recipe development and food photography. All opinions are 100% my own.


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  1. I would make a obbler. Lots of great fruit right now, but too hot for an oven!

  2. Every summer, I kind of forget about plums in my excitement over peaches and cherries – I’m so glad you haven’t had the same oversight! This looks gorgeous, and I love the combination of plums and walnuts.

  3. Oh they offered me one and I really wanted it but I just don’t have the space but now I am regretting not taking it. Would have been so much fun to experiment with. 

  4. I’d try to bake cookies!

  5. That tart is beautiful and I’m loving that  Microwave Oven! I hate heating up my house during the summer and that sounds pretty nice! 

  6. A lasagna

  7. I adore this for a summer picnic. Delicious!

  8. Popcorn

  9. The Plum and Walnut tart looks really good.  I’m looking for ways to add fruit to my diet.

  10. I’d probably do a simple roasted veggies & sausage dinner, as I don’t bake sweets.

  11. I would first cook a whole chicken in it!

  12. popcorn

  13. I would make butterscotch pudding. 🙂

  14. I would make scalloped potatoes.

  15. You make an excellent point about the irony of great fruit + not wanting to bake in the summer.  Who decided that fruit needed to be in pies and tarts anyway? Seriously though, this looks delicious and I have yet to get my hands on my plums, must change that right away.

  16. Wow!! What a gorgeous, unique tart. I love how you used the large plum chunks. So great to cook seasonally!

  17. I’d love to make a blueberry or peach cobbler.

  18. my micro tuna casserole dish! tvollowitz at aol dot com

  19. I have the same problem – I hate to use my oven in the FL summer heat but there are so many things I want to make with the fresh fruits and veggies from the garden! I think the first thing I’d make would be roasted eggplant & tomatoes – man I love that combo.

  20. I would make chicken

  21. I would make black walnut fudge.

  22. I would make herb roasted chicken breasts in the convection oven

  23. I would probably make a greek chicken.

  24. I would make yummy butter popcorn!

  25. Probably the first thing I would make (or do) with it is to warm up food, then I would probably make some rice with it.

  26. Isn’t that the chunkiest tart in the world?! Yummo! And good luck to the joiners!

    Julie & Alesah
    Gourmet Getaways xx

  27. I would make a cherry pie.

  28. The first thing I’d cook is a pizza.  I used to have a convection oven that made the best pizza and I’ve missed having one for that.

  29. I would first make some chicken.

  30. Probably popcorn…first things first, you know.

  31. I would make that tart! How yummy!

  32. I would make some yummy chili. Thanks for the chance.

  33. I think I would bake a cake!

  34. Popcorn for movie night!

  35. I would first cook a chicken in it.

  36. I would use it to make burritos… lol and heat up leftovers. 🙂 

  37. I would make a dessert like peanut butter cookies.

  38. i would make steamed wontons

  39. I might just make that tart.  It sounds so yummy!

  40. My first dish would be chicken I eat a lot of chicken and fish

  41. Honestly, probably something boring.  Like a hot dog.

  42. I would bake cookies.

    kport207 at gmail dot com

  43. I would make a chicken pie in it first.  It would be so much fun experimenting with it!

  44. cookies!

  45. I would try a blackberry cobbler.

  46. I’d love to make some mashed sweet potatoes or a bread pudding in the oven!

  47. I have never cooked with a conventional oven before. I would probably start out small by cooking a small chicken and see how well it cooks.

  48. I would bake cookies!

  49. I would like to bake cookies!

  50. i would say chicken till you posted that plum walnut thing. that! i wanna cook that!

  51. Me and my girls love to bake so probably some brownies & cookies.

  52. I ‘d make black walnut fudge.

  53. If I won it, the first thing I would make would be chocolate pudding cake

  54. I would first cook mac and cheese!

  55. I would make blackberry cobbler!

  56. bake cookies

  57. I would probably make a few burritos.

  58. I would use it to make roasted veggies and some vegan cookies for dessert!

  59. I would cook chili mac and cheese

  60. I’d probably cook chicken.

  61. I would probably make a meatloaf and baked potatoes. Love them both and they would work great in this oven.

  62. I would cook chicken.

  63. I would bake a cake in the oven.

  64. Tiropitas (Greek cheese pies)

  65. i’d make some chicken

  66. I would try a roast chicken in the convection oven.  Later, some cookies!

  67. I would love to make a pizza or a pie!

  68. I would make pecan pie cookie bars.

  69. I would bake a peach pie

  70. I would like to make popcorn in my new microwave

  71. I would make chicken

  72. Chicken Casserole

  73. I would make tacos.

  74. i would cook a chicken in it.. and a side of potatoes

  75. I would cook a whole chicken.

  76. I would try making some cookies. I love to bake but my oven burns everything. My kids would love it!

  77. popcorn

  78. I would make some brownies

  79. I would cook some chicken and vegetables.

  80. We love our fowl, so it would be chicken.

  81. Lemon bars or brownies.

  82. I would make lasagna. 

  83. I would make some Texas Toast! 

  84. I’d make peach cobbler.

  85. I would make baked potatoes

  86. I would try BBQ chicken.

  87. I’d like to make a peach cobbler.

  88. I would make hot artichoke spinach dip.

  89. I would make blackberry cobbler, my husband’s favorite. 

  90. I would bake a Chicken. 😉 😉 😉 

  91. I might make a pie first.

  92. id make some cookies to try it out first

  93. I would make a strawberry and rhubarb cobbler.

  94. I would make meatloaf

  95. I would cook Popcorn……..

  96. I would make a lasagna.

  97. I would make a loaded potato. 

  98. I would bake an apple pie. Thanks!

  99. Thank You for the giveaway…we have a recipe for garlic prawns !

  100. I think I’d make a strawberry or raspberry tart first.

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