Orange Cake with Brown Sugar and Oats Recipe

Ingredients

• 1.25 cups all-purpose flour
• 1.25 cups light brown sugar
• 0.25 cup rolled oats
• 1 tablespoon ground chia seeds
• 1 tablespoon flaxseed meal
• 3 eggs
• 2 oranges, juiced and zested
• 5 ounces unsalted butter, melted
• 2 tablespoons milk, or as needed