Tender pastry crust topped with caramelized onions and two kinds of mushrooms? That’s what I’m talkin’ about! This caramelized onion tart with mushrooms is going to knock your socks off.
If you’ve made a batch of this addictive caramelized onion jam, it’s the shortcut to making this tart in a hurry. You can also use caramelized onions made just for this recipe. If you opt to do that, drizzle a few teaspoons of balsamic vinegar over the onions just as they’re finished for an extra pop of flavor.
Now let’s talk about the pie crust. You could use a store bought pie crust, but I need to take a moment to encourage you to try your hand at making pie crust at home. It’s such a vintage skill, and with my Grandma’s easy pie crust recipe, it’s hard to go wrong.
This tart uses a single pie crust. My Grandma’s recipe makes a double pie crust. This means you can use one now and pop the other half of the dough in the freeze for later.
Making this caramelized onion and mushroom tart
Instead of rolling the pie crust into a round as you would for a pie, roll it into a rectangle to fit a baking sheet. It should be about an eighth-inch thick. (Check out this technique for easy, non-stick rolling.) Pierce the crust with a fork eight to ten times; this allows air to escape, preventing a big bubble.
Once rolled out, gently spread the surface with softened cream cheese, then add the cooked onion mixture. Spread evenly, almost out the the edge of the crust. Bake until the crust is cooked through and lightly browned on the edges.
5 Easy Steps to Transform Your Pantry!
Ready to switch from store bought to homemade? Let me help you make some changes! Grab my FREE five-part guide to getting started.
Cut into small squares, this mushroom and onion tart makes a great appetizer for dinner parties. Or serve it with a big green salad for dinner.
★ Did you make this onion tart recipe? Don’t forget to give it a star rating below! ★
Caramelized Onion and Mushroom Tart
Ingredients
- 1 cup caramelized onion jam or caramelized onions
- 3 oz white mushrooms sliced
- 3 oz portobello mushrooms sliced
- 1 - 2 tablespoons water
- 1 single pie crust
- 4 oz cream cheese softened
- salt and pepper to taste
Instructions
- Preheat oven to 425 degrees Fahrenheit.
- Warm the caramelized onion jam over medium high heat in a large pan.1 cup caramelized onion jam
- Once the jam is heated through, stir in mushrooms and water. Allow mushrooms to wilt, about 3-4 minutes. Add salt and pepper to taste.3 oz white mushrooms, 3 oz portobello mushrooms, 1 - 2 tablespoons water
- Remove from heat and set aside.
- Line a baking sheet with a sheet of parchment paper.
- Roll pie crust into a rectangular shape about 1/8" thick; transfer to baking sheet. Use a fork to pierce holes in the crust. (8 to 10 times is sufficient.)1 single pie crust
- Gently spread cream cheese over the pie crust, to within half and inch of the edges.4 oz cream cheese
- Top with mushroom and onion mixture.
- Bake for 20-25 minutes, or until pie crust is cooked through and edges are golden brown.
- Allow to cool to room temperature before cutting and serving.
Nutrition
I made this Keto with an almond crust. Really liked it!
Just made your amazing tart, though I used my own carmalised onions as I did not have the jam. It came out so well that it didn’t last very long at all. Will certainly be making this again and again
Excellent!