Blueberry Lemon Cream Bars

INGREDIENTS

1 cup

Unsalted Butter (Softened at Room Temperature)

3 cups

All Purpose Flour

1 1/2 cups

Rolled Oats (NOT Quick))

1 1/3 cups

Light Brown Sugar (Packed)

1 tsp

Salt

1 tsp

Baking Powder

Egg (Large, Separated)

1 oz

Sweetened Condensed Milk (Canned)

1/2 cup

Fresh Lemon Juice

2 tsp

Lemon Zest

2 1/2 cups

(About 13 Ounces Blueberries, at Room Temperature)