berry fruit-peanut butter crumble

Ingredients For berry fruit-peanut butter crumble

• 2 Tbsp

  cornstarch
• 1-1/2 Tbsp

  lemon juice
• 1 c

  sugar
• 1-1/2 c

  blueberries
• 1 c

  strawberries
• 1-1/2 c

  blackberries
• 1-1/2 c

  rolled oats, not instant
• 1/2 c

  flour
• 2/3 c

  light brown sugar
• 1/2 tsp

  cinnamon
• 1/4 tsp

  salt
• 1 stick

  unsalted butter, cut up
• 1/2 c

  creamy peanut butter