Strawberry-Rhubarb Bars

I usually make these when I know V is coming over (or I'm heading over there) with the gang. She loves them the way I love her banana bars. Tonight, I had four stalks of rhubarb that were crying to be used up. I was also home at a really good time, after leaving on time today in order to get to the budget vote on time. These are really just so delicious.

For the filling:

1 1/2 c. strawberries, sliced
1 1/2 c. rhubarb, sliced
1 tbsp. lemon juice
1/2 c. granulated sugar
2 tbsp. cornstarch

For the crust:
1 1/2 c. all purpose flour
1 1/2 c. oats
1 c. brown sugar, firmly packed
3/4 c. butter
1/2 tsp. baking soda
1/4 tsp. salt

For the drizzle:
3/4 c. confectioners sugar
1-2 tbsp. lemon juice

Preheat oven to 350. Grease the bottom of a 13x9 in. pan. Combine rhubarb, strawberries, and lemon juice in a 2 qt pot. Cover and cook over medium heat, stirring occasionally, until fruit is tender. Add cornstarch and sugar. Keep cooking until mixture comes to a boil. Remove from heat and set aside. Meanwhile, combine all dry ingredients and beat on low speed until mixture is crumbly. Reserve some of the crumbly mixture. Press the remaining crumbly mixture in the bottom of the pan. Spread fruit filling over the top. Sprinkle reserved crumbly mixture evenly over the top. Bake 35 minutes. Cool completely. Drizzle with icing.