Could you tell me how to prepare Maple Rhubarb Blondies?
Here's a recipe for Maple Rhubarb Blondies:

Ingredients:

Batter

• 3/4 cup unsalted butter, extra for greasing
• 3/4 cup golden yellow sugar
• 3/4 cup white sugar
• 3 large eggs
• 1 teaspoon vanilla extract
• 1 teaspoon lemon juice
• 3/4 cup AP flour, extra for coating pan
• 1/2 cup yellow corn flour
• 2 teaspoons fine kosher salt

Rhubarb Ripple

• 3/4 cup rhubarb jam, (or any red or light coloured jam)
• 2 tablespoons maple syrup
• 8 teaspoons red liquid food coloring
• 2 tablespoons blondie batter

Instructions:

1. Generously grease a 10 inch heart shaped baking pan with butter and coat in flour.  Shake out excess and set aside.
2. In a large saucepan, melt butter over medium heat for 5-7 minutes or until browned, remove from heat.  Working in the saucepan add sugars and whisk until combined.  Quickly whisk in eggs, one at a time to prevent scrambling.  Add vanilla, lemon juice, flours and salt and whisk again until smooth.  Pour into the prepared heart-shaped pan, set aside.
3. To a medium bowl add jam, maple syrup and food colouring, mix.  Reserve 1/2 cup of mixture for later.  Add 2 tbsp of blondie batter to the original medium bowl and mix until combined.
4. Dollop rhubarb and batter mixture in a random pattern on top of the blondie in the heart-shaped pan.  Use a butter knife to swirl in a decorative pattern vertically and horizontally, keeping your knife on the surface of the blondie.  Bake at 350F for 25-30 minutes until golden brown.
5. Serve blondie with ice cream and drizzle over extra Rhubarb ripple if desired, enjoy!

Enjoy your Maple Rhubarb Blondies!